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Jwt Attack

101 CVEs product

Monthly

CVE-2026-48523 MEDIUM PATCH This Month

Algorithm allow-list bypass in PyJWT 2.9.0-2.12.1 permits an attacker who controls a registered JWK/JWKS private key to circumvent caller-enforced algorithm restrictions during JWT signature verification. The library correctly checks the token header's alg claim against the caller-supplied allow-list, but then performs the actual cryptographic verification using the algorithm bound to the PyJWK object rather than the header-declared algorithm - creating a exploitable mismatch. Specifically, the documented PyJWKClient.get_signing_key_from_jwt() flow is affected, meaning applications relying on this pattern for algorithm-restricted JWT validation may accept tokens signed with algorithms they explicitly prohibited. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV.

Authentication Bypass Python Jwt Attack
NVD GitHub
CVSS 3.1
5.4
CVE-2026-9793 MEDIUM This Month

Signature policy bypass in Red Hat Build of Keycloak's JWE request object handling allows unauthenticated remote attackers to inject unauthorized claims into the OpenID Connect authorization flow. When a JWE-encrypted request object is submitted and its decrypted content is raw JSON, Keycloak improperly skips signature verification, violating both OIDC Core and Financial-grade API (FAPI) signing requirements. No public exploit code exists at time of analysis, but the integrity-only impact (CVSS I:H) is directly relevant to authorization trust boundaries, making this high-priority for FAPI-compliant or financial-sector Keycloak deployments.

Authentication Bypass Jwt Attack
NVD
CVSS 3.1
5.9
EPSS
0.0%
CVE-2025-41669 HIGH PATCH This Week

Arbitrary root code execution in Phoenix Contact PLCnext Control devices (all firmware before 2026.0.3) is reachable by an authenticated low-privileged Engineer user who installs APP packages from the PLCnext Store through the Web-based Management (WBM) interface. Because the device never verifies the integrity or signature of the downloaded app (CWE-347, tagged JWT Attack), a tampered package runs as root and can compromise the integrity and availability of the controller. No public exploit is identified at time of analysis and EPSS is low (0.06%, 18th percentile), but the flaw is network-reachable with low attack complexity and a vendor patch (2026.0.3) is available.

RCE Jwt Attack
NVD
CVSS 4.0
8.7
EPSS
0.1%
CVE-2026-46354 Go CRITICAL PATCH GHSA Act Now

Unauthenticated agent token theft in Coder v2 (self-hosted developer workspace platform) stems from azureidentity.Validate() verifying the PKCS#7 signer's certificate chain but skipping signature verification of the signed content itself. Remote attackers who know a target VM's vmId (a UUIDv4) can forge a PKCS#7 envelope containing a legitimate Azure certificate alongside attacker-controlled content and POST it to the unauthenticated /api/v2/workspaceagents/azure-instance-identity endpoint to receive the victim workspace agent's session token, which then unlocks Git SSH keys, OAuth tokens for GitHub/GitLab/Bitbucket, and workspace secrets. No public exploit identified at time of analysis, but the vulnerability is vendor-confirmed via GHSA-6x44-w3xg-hqqf and a detailed root-cause analysis with attack-path diagram is published.

RCE Gitlab Microsoft Jwt Attack Hashicorp
NVD GitHub
CVSS 3.1
9.1
CVE-2026-45575 Maven HIGH PATCH GHSA This Week

Authentication bypass in epa4all-client allows MITM attackers positioned within the TI (Telematikinfrastruktur) network to capture SMC-B-signed authentication material by substituting a forged OIDC discovery document. The vulnerability affects all versions prior to 1.2.2 and requires the attacker to intercept TLS connections between the client and Identity Provider. No public exploit identified at time of analysis.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 3.1
7.4
EPSS
0.0%
CVE-2026-41431 HIGH PATCH This Week

Zen Browser's auto-update mechanism delivered unsigned code to all users due to deliberately removed MAR signature verification inherited from Firefox. The browser shipped with Mozilla's updater binary stripped of all cryptographic verification code and served update packages containing zero cryptographic signatures. Compromise of the update server or GitHub Actions pipeline allowed arbitrary code execution on all Zen installations without cryptographic chain-of-trust protection. Version 1.19.9b restores MAR signing with RSA-4096 keys and certificate verification in the updater binary.

RCE Mozilla Jwt Attack
NVD GitHub
CVSS 3.1
8.0
EPSS
0.0%
CVE-2026-42193 CRITICAL PATCH Act Now

Plunk is an open-source email platform built on top of AWS SES. Prior to version 0.9.0, the /webhooks/sns endpoint accepts Amazon SNS notification payloads from unauthenticated requests without verifying the SNS signature, certificate, or topic ARN, meaning anyone can forge a valid-looking webhook request. This allows an unauthenticated attacker to spoof SNS events to trigger workflow automations, unsubscribe contacts, manipulate email delivery metrics, and potentially exhaust billing credits. This issue has been patched in version 0.9.0.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 3.1
9.1
EPSS
0.0%
CVE-2026-44714 Maven HIGH PATCH GHSA This Week

Signature verification bypass in bitcoinj-core library allows attackers to forge Bitcoin transaction validations by exploiting fast-path optimization flaws in P2PKH and P2WPKH script execution. Versions 0.15 through 0.17.0 fail to verify that attacker-supplied public keys match the hash committed to in transaction outputs, enabling arbitrary keypairs to satisfy local transaction validation checks. While this does not affect SPV (Simple Payment Verification) nodes that follow proof-of-work without signature verification, applications using the correctlySpends() method for transaction validation or pre-signing checks are vulnerable to accepting fraudulent transactions. Vendor-released patch available in version 0.17.1, fixes confirmed in GitHub commits 2bc5653c and b575a682. No active exploitation confirmed (not in CISA KEV); EPSS data unavailable.

RCE Java Jwt Attack
NVD GitHub VulDB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-44497 Cargo CRITICAL PATCH GHSA Act Now

Consensus divergence in Zebra 4.3.1 enables blockchain network partitioning through crafted transparent transactions with invalid sighash types. Insufficient error handling at the Rust-to-C++ FFI boundary causes Zebra to incorrectly accept transactions with undefined hash types by reusing stale buffer data from prior valid signature checks, while zcashd correctly rejects these transactions. Attackers can exploit this by chaining OP_CHECKSIGVERIFY with OP_CHECKSIG opcodes using invalid hash types to trigger acceptance on Zebra nodes but rejection on zcashd nodes, creating a consensus split that could enable double-spend attacks. Vendor-released patch: 4.4.0. No public exploit identified at time of analysis, but the technical mechanism is fully disclosed in the GitHub advisory GHSA-gq4h-3grw-2rhv.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 4.0
9.3
EPSS
0.0%
CVE-2026-42501 Go HIGH PATCH This Week

The Go toolchain's module proxy validation can be bypassed by attackers controlling untrusted GOPROXY or GOSUMDB endpoints, allowing delivery of malicious toolchain versions that execute with developer privileges. When the go command downloads a different toolchain version (via GOTOOLCHAIN, go.mod, or go.work directives), a malicious proxy can serve altered toolchains by exploiting checksum database validation logic that incorrectly accepts empty responses. While EPSS indicates only 1% exploitation probability and CISA SSVC marks exploitation status as 'none', the total technical impact rating and network attack vector (AV:N) represent significant supply chain risk for organizations using non-default module proxies. Vendor patch available in Go 1.26.3 and 1.25.10.

Authentication Bypass Jwt Attack
NVD VulDB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-7689 PHP LOW POC Monitor

Improper cryptographic signature verification in Dolibarr ERP CRM up to version 23.0.2 allows remote attackers to bypass signature validation in the Online Signature Module, potentially forging or manipulating signed transactions. The vulnerability affects the dol_verifyHash function and has been publicly disclosed with exploit code available, though exploitation requires high technical complexity and is not confirmed as actively exploited in production environments.

PHP Information Disclosure Jwt Attack
NVD VulDB GitHub
CVSS 4.0
2.9
EPSS
0.0%
CVE-2026-41669 PHP HIGH PATCH GHSA This Week

SAML signature validation in Admidio's Identity Provider implementation can be completely bypassed due to discarded return values in authentication flows. The validateSignature() method returns error strings on failure but both call sites (SSO and Single Logout handlers) discard the return value, allowing unsigned or invalidly-signed SAML requests to proceed. Attackers can forge AuthnRequests to exfiltrate logged-in users' personal data (username, email, real name, role memberships) to attacker-controlled endpoints, or forge LogoutRequests to terminate victim sessions and cascade logout across federated Service Providers. The smc_require_auth_signed configuration setting provides no protection. Public exploit code exists (PoC in GitHub advisory). CVSS 8.2 reflects network-accessible attack with no authentication required, though practical exploitation of the SSO path requires victim to have an active session. No active exploitation confirmed at time of analysis.

PHP Denial Of Service CSRF Jwt Attack
NVD GitHub
CVSS 3.1
8.2
EPSS
0.0%
CVE-2026-33467 Go MEDIUM PATCH This Month

Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.

Information Disclosure Elastic Jwt Attack
NVD
CVSS 3.1
5.9
EPSS
0.0%
CVE-2026-38651 Go HIGH PATCH GHSA This Week

Authentication Bypass vulnerability exists in Netmaker versions prior to 1.5.0. The VerifyHostToken function in logic/jwts.go fails to validate the JWT signature when verifying host tokens. An attacker can forge a JWT signed with any arbitrary key and use it to impersonate any host in the network, gaining access to sensitive information

Authentication Bypass Jwt Attack
NVD GitHub VulDB
CVSS 3.1
8.2
EPSS
0.0%
CVE-2026-6986 LOW POC PATCH Monitor

Improper verification of cryptographic signatures in Cesanta Mongoose versions up to 7.20 allows remote attackers to bypass GCM authentication tag validation in the mg_aes_gcm_decrypt function. The vulnerability has high attack complexity and requires no user interaction, but provides only integrity impact (not confidentiality or availability). Publicly available exploit code exists, and vendor has released patched version 7.21.

Information Disclosure Jwt Attack
NVD VulDB GitHub
CVSS 4.0
2.9
EPSS
0.0%
CVE-2026-6966 Cargo HIGH PATCH GHSA This Week

Signature duplication in AWS Tough TUF client prior to v0.22.0 allows authenticated attackers to bypass threshold signature requirements for delegated role metadata by reusing a single valid signature multiple times. The flaw undermines TUF's multi-signature integrity model, enabling acceptance of forged metadata with reduced cryptographic validation. Vendor patch available (tough-v0.22.0, tuftool-v0.15.0). No public exploit code or active exploitation confirmed at time of analysis, but CVSS 7.0 reflects high integrity impact to both vulnerable and downstream systems.

Authentication Bypass Jwt Attack
NVD GitHub VulDB
CVSS 4.0
7.0
EPSS
0.0%
CVE-2026-6911 CRITICAL PATCH Act Now

Missing JWT signature verification in AWS Ops Wheel enables remote unauthenticated attackers to forge administrative tokens and gain complete control over all application data and Cognito user accounts across all tenants. This critical authentication bypass (CVSS 9.8) has a vendor-released patch available via GitHub PR #164. EPSS data not available, but the combination of zero authentication requirements, network attack vector, and multi-tenant data exposure creates immediate exploitation risk for all deployments.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 4.0
9.3
EPSS
0.0%
CVE-2026-34068 Cargo MEDIUM PATCH GHSA This Month

The Nimiq staking contract accepts UpdateValidator transactions that omit proof-of-knowledge validation when updating voting keys, enabling rogue-key attacks against BLS signature aggregation used in Tendermint block justification. An attacker who can predict the next epoch's validator set could forge quorum-appearing block justifications with a single signature. Exploitation is constrained by the requirement to predict future validator set composition via VRF, making real-world attacks unlikely despite the critical cryptographic impact. Vendor-released patch v1.3.0 addresses the vulnerability.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 3.1
6.8
EPSS
0.0%
CVE-2026-40372 NuGet CRITICAL PATCH GHSA Exploit Unlikely Act Now

Cryptographic signature verification bypass in ASP.NET Core 10.0 enables remote unauthenticated attackers to forge authentication tokens and gain unauthorized access to protected resources. Tagged as a JWT attack involving authentication bypass, this vulnerability allows complete compromise of confidentiality and integrity without requiring any special conditions (AV:N/AC:L/PR:N/UI:N). Microsoft has released a security update addressing this flaw. No active exploitation confirmed in CISA KEV at time of analysis, though the authentication bypass nature and network-accessible attack surface present significant risk for widely deployed ASP.NET Core applications.

Authentication Bypass Red Hat Jwt Attack
NVD VulDB GitHub
CVSS 3.1
9.1
EPSS
0.0%
CVE-2026-41301 npm MEDIUM PATCH This Month

OpenClaw 2026.3.22 through 2026.3.30 contain a signature verification bypass in the Nostr direct message (DM) ingress handler that processes pairing challenges before validating event signatures. Remote unauthenticated attackers can send forged DMs to create bogus pending pairing entries, exhaust shared pairing capacity, and trigger unbounded relay and logging work on the Nostr channel, causing denial of service. No public exploit code or active exploitation has been confirmed; a vendor patch is available in version 2026.3.31 and later.

Authentication Bypass Jwt Attack
NVD GitHub
CVSS 4.0
6.9
EPSS
0.0%
CVE-2026-5050 HIGH This Week

Signature validation bypass in Redsys payment gateway plugin (WooCommerce) allows remote attackers to mark unpaid orders as completed without actual payment. Unauthenticated attackers who obtain a valid order key and amount can forge payment callbacks across Redsys, Bizum, and Google Pay flows, enabling fraudulent order fulfillment. Affects versions ≤7.0.0 of 'Payment Gateway for Redsys & WooCommerce Lite' WordPress plugin. CVSS 7.5 (AV:N/AC:L/PR:N/UI:N) indicates trivial remote exploitation, though EPSS data unavailable. No CISA KEV listing or public POC identified at time of analysis. Vendor patch released in changeset 3501998.

WordPress Information Disclosure Google Jwt Attack
NVD
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-24032 MEDIUM CISA This Month

Authentication bypass in Siemens SINEC NMS versions prior to V4.0 SP3 with UMC allows unauthenticated remote attackers to gain unauthorized access due to insufficient user identity validation in the UMC component (CWE-347: Improper Verification of Cryptographic Signature). The vulnerability enables network-based attacks with low complexity requiring no user interaction (CVSS 7.3, AV:N/AC:L/PR:N/UI:N), granting partial access to confidentiality, integrity, and availability. ZDI tracking ID CAN-27564 suggests coordinated disclosure. No active exploitation (CISA KEV) or public exploit code confirmed at time of analysis, though JWT-related authentication bypasses are well-understood attack primitives.

Authentication Bypass Jwt Attack
NVD
CVSS 4.0
6.9
EPSS
0.1%
CVE-2026-0234 HIGH PATCH This Week

Cryptographic signature bypass in Palo Alto Networks Cortex XSOAR and XSIAM Microsoft Teams integrations (versions 1.5.0 through 1.5.51) allows unauthenticated remote attackers to access and modify protected resources. The vulnerability stems from improper JWT verification (CWE-347), enabling attackers to forge authentication tokens. With CVSS 7.2 (High complexity, network-accessible, no privileges required) and tags indicating JWT attack vectors and information disclosure potential, this represents a critical integration security flaw requiring immediate patching to version 1.5.52 or later.

Information Disclosure Microsoft Jwt Attack
NVD VulDB
CVSS 4.0
7.2
EPSS
0.0%
CVE-2026-5466 HIGH PATCH This Week

Signature verification bypass in wolfSSL's ECCSI implementation allows adjacent network attackers to forge cryptographic signatures for any message and identity without authentication. The wc_VerifyEccsiHash function fails to validate that signature scalars r and s fall within the required mathematical range [1, q-1], enabling attackers with knowledge of public constants to craft universally-valid forged signatures. This defeats the cryptographic integrity guarantees of ECCSI-signed data, particularly affecting JWT authentication systems and identity-based cryptographic protocols. No public exploit identified at time of analysis.

Information Disclosure Jwt Attack
NVD GitHub VulDB
CVSS 4.0
7.6
EPSS
0.0%
CVE-2026-40070 Ruby HIGH PATCH GHSA This Week

Signature verification bypass in BSV Ruby SDK versions 0.3.1 through 0.8.1 allows authenticated attackers to forge blockchain identity certificates. The WalletClient#acquire_certificate method persists certificates without validating certifier signatures in both 'direct' acquisition (where attackers supply all fields including forged signatures) and 'issuance' protocols (where malicious certifier endpoints inject invalid signatures). Forged certificates appear authentic to list_certificates and prove_certificate operations, enabling impersonation attacks. CVSS 8.1 (AV:N/AC:L/PR:L/UI:N) reflects network-accessible exploitation requiring low-privilege authentication. No public exploit identified at time of analysis.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 3.1
8.1
EPSS
0.0%
CVE-2026-39413 PyPI MEDIUM PATCH GHSA This Month

LightRAG API authentication can be bypassed via JWT algorithm confusion attack, where an attacker forges tokens by specifying 'alg': 'none' in the JWT header to impersonate any user including administrators. The vulnerability exists in the validate_token() method in lightrag/api/auth.py (line 128), which accepts the unsigned 'none' algorithm despite not explicitly permitting it, allowing unauthenticated remote attackers to gain unauthorized access to protected resources. Publicly available proof-of-concept code demonstrates the attack; vendor has released a patch addressing the root cause of improper algorithm validation.

Authentication Bypass Python Jwt Attack
NVD GitHub
CVSS 3.1
4.2
EPSS
0.0%
CVE-2026-30762 PyPI HIGH PATCH GHSA This Week

LightRAG's JWT authentication can be bypassed via a hardcoded default secret 'lightrag-jwt-default-secret' when TOKEN_SECRET is not configured. Unauthenticated attackers can forge valid tokens to access protected API endpoints in installations running v1.4.10 with AUTH_ACCOUNTS enabled but TOKEN_SECRET unset. CVSS 7.5 (High) reflects network-accessible confidentiality breach with no authentication required. No public exploit identified at time of analysis, though the hardcoded secret is publicly documented in the vulnerability disclosure. EPSS data not available for this CVE.

AI / ML Jwt Attack Hardcoded Credentials
NVD GitHub
CVSS 3.1
7.5
CVE-2026-2625 MEDIUM This Month

Denial of service in rust-rpm-sequoia allows local attackers to crash RPM signature verification by submitting specially crafted RPM files that trigger unhandled errors in OpenPGP parsing, preventing legitimate package management operations. CVSS 4.0 (low severity), local attack vector, non-authenticating. No public exploit code or active exploitation confirmed.

Denial Of Service Red Hat Jwt Attack
NVD VulDB
CVSS 3.1
4.0
EPSS
0.0%
CVE-2026-34840 HIGH PATCH This Week

Authentication bypass in OneUptime SAML SSO implementation allows authenticated attackers to impersonate arbitrary users by exploiting XML signature verification logic flaws. Affected versions prior to 10.0.42 decouple signature validation from identity extraction, enabling XML injection attacks where an unsigned assertion with attacker-controlled identity precedes a legitimately signed assertion. EPSS and exploitation signals indicate publicly available exploit code exists with moderate technical complexity (CVSS AC:L, PR:L). No confirmed active exploitation (not in CISA KEV).

Authentication Bypass Jwt Attack
NVD GitHub
CVSS 3.1
8.1
EPSS
0.0%
CVE-2026-34872 CRITICAL PATCH Act Now

Finite-field Diffie-Hellman (FFDH) in Mbed TLS 3.5.x, 3.6.0 through 3.6.5, and TF-PSA-Crypto 1.0 lacks contributory behavior due to improper validation of peer-supplied parameters, allowing an attacker to restrict the shared secret to a small set of predictable values. While the vulnerability does not directly impact TLS (which does not depend on contributory behavior), it poses a significant risk to protocols that do rely on this property, including those where an active network attacker or malicious peer can exploit the weakness. No CVSS score or public exploit code has been assigned at the time of analysis.

Information Disclosure Red Hat Jwt Attack Suse
NVD VulDB
CVSS 3.1
9.1
EPSS
0.0%
CVE-2026-34240 HIGH PATCH GHSA This Week

JWT token forgery in appsup-dart/jose library (versions prior to 0.3.5+1) enables remote attackers to bypass authentication by embedding attacker-controlled public keys in JOSE headers. The library incorrectly accepts header-supplied 'jwk' parameters as trusted verification keys without validating they exist in the application's trusted keystore, allowing unauthenticated attackers to sign arbitrary tokens with their own key pairs. EPSS data not available; no public exploit identified at time of analysis, though exploitation requires only standard JWT manipulation tools.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-32883 MEDIUM PATCH This Month

Botan cryptography library versions 3.0.0 through 3.10.x fail to verify OCSP response signatures during X.509 certificate path validation, allowing attackers to forge certificate status responses and potentially bypass revocation checks. This integrity bypass affects any application using Botan for TLS or certificate validation and requires network positioning but not authentication. The vulnerability was patched in version 3.11.0.

Information Disclosure Red Hat Jwt Attack
NVD GitHub VulDB
CVSS 3.1
5.9
EPSS
0.0%
CVE-2026-34377 Cargo HIGH PATCH GHSA This Week

Zebra cryptocurrency nodes prior to version 4.3.0 can be forced into consensus split by malicious miners who craft blocks containing V5 transactions with matching txids but invalid authorization data. The vulnerability stems from a cache lookup that used ZIP-244 txid (which excludes authorization data) to bypass full verification, allowing nodes to accept blocks with invalid signatures. While this does not enable invalid transaction acceptance, it isolates vulnerable nodes from the Zcash network, creating fork conditions exploitable for service disruption and potential double-spend scenarios against partitioned nodes. No public exploit code or CISA KEV listing exists, but the technical complexity is low for actors with mining capabilities. Affected products are zebrad and zebra-consensus Rust packages supporting Network Upgrade 5 (V5 transactions). Vendor-released patch: Zebra 4.3.0.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 4.0
8.4
EPSS
0.0%
CVE-2026-32974 npm HIGH PATCH GHSA This Week

Authentication bypass in OpenClaw's Feishu webhook integration (pre-2026.3.12) allows unauthenticated remote attackers to inject forged events and trigger arbitrary downstream tool execution. The vulnerability occurs when administrators configure only verificationToken without encryptKey, enabling attackers to craft malicious webhook payloads that bypass validation. No public exploit identified at time of analysis, though CVSS 8.8 reflects network accessibility (AV:N), zero complexity (AC:L), and no privileges required (PR:N).

Authentication Bypass Jwt Attack
NVD GitHub VulDB
CVSS 4.0
8.8
EPSS
0.1%
CVE-2026-33895 npm HIGH PATCH This Week

The digitalbazaar/forge npm package accepts forged Ed25519 signatures due to missing scalar canonicalization checks, allowing authentication and authorization bypass in applications that rely on signature uniqueness. All versions since Ed25519 implementation are affected (confirmed through version 1.3.3), identified as pkg:npm/node-forge. Publicly available exploit code exists with a complete proof-of-concept demonstrating how attackers can create multiple valid signatures for the same message by adding the group order L to the scalar component S, bypassing deduplication, replay protection, and signed-object canonicalization checks. The vendor has released a patch via commit bdecf11571c9f1a487cc0fe72fe78ff6dfa96b85.

Authentication Bypass Node.js OpenSSL Red Hat Canonical +1
NVD GitHub VulDB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-33487 Go HIGH PATCH This Week

XML Digital Signature validation in russellhaering/goxmldsig library prior to version 1.6.0 can be bypassed due to a Go loop variable capture bug, allowing remote unauthenticated attackers to forge or manipulate XML signatures without detection. The vulnerability affects applications using Go versions before 1.22 or older go.mod configurations, enabling integrity violations in SAML authentication, document signing, and other XML-DSig implementations. EPSS score of 0.02% suggests low observed exploitation probability, with no confirmed active exploitation (not in CISA KEV). Vendor patch available in version 1.6.0.

Information Disclosure Jwt Attack
NVD GitHub VulDB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-20699 MEDIUM PATCH This Month

A downgrade vulnerability affecting Intel-based Mac computers allows malicious applications to bypass code-signing restrictions and access user-sensitive data. The vulnerability impacts macOS Sequoia (versions before 15.7.5), macOS Sonoma (versions before 14.8.5), macOS Tahoe (versions before 26.3 and 26.4), and affects all Intel-based Mac systems running vulnerable versions. An attacker can craft an application that exploits insufficient code-signing validation to downgrade security protections and exfiltrate sensitive user information.

Information Disclosure Apple macOS Jwt Attack Intel
NVD VulDB
CVSS 3.1
6.2
EPSS
0.0%
CVE-2026-4600 npm HIGH PATCH GHSA This Week

Cryptographic signature bypass in jsrsasign before 11.1.1 allows remote attackers to forge DSA signatures and X.509 certificates by supplying malicious domain parameters (g=1, y=1, r=1) that cause verification functions to incorrectly validate any message hash. This actively undermines authentication and integrity checks in applications using the library for JWT validation, certificate verification, or digital signatures. EPSS score is negligible (0.01%) despite proof-of-concept availability, and CISA SSVC classifies this as requiring proof-of-concept but not automatable, indicating targeted exploitation risk rather than widespread scanning.

Information Disclosure Jwt Attack
NVD GitHub VulDB
CVSS 4.0
8.1
EPSS
0.0%
CVE-2026-4115 LOW POC PATCH Monitor

PuTTY versions up to 0.83 contain a weak authentication vulnerability in the Ed25519 signature verification function (eddsa_verify in crypto/ecc-ssh.c) that allows remote attackers to potentially forge or manipulate digital signatures due to improper validation of Ed25519 signature components. While a public proof-of-concept exploit exists and the vulnerability affects signature verification, the real-world impact remains unproven, with CVSS 3.7 (low severity) and EPSS probability indicating exploitation is difficult and requires high complexity. The vendor (PuTTY developers) has already released a patch addressing this issue.

Information Disclosure Jwt Attack
NVD VulDB GitHub
CVSS 4.0
2.9
EPSS
0.0%
CVE-2026-4541 LOW POC PATCH Monitor

A cryptographic signature verification flaw exists in tinyssh's Ed25519 signature handler (crypto_sign_ed25519_tinyssh.c) that allows improper validation of signatures, potentially enabling an attacker to forge or bypass signature checks. Affected versions of janmojzis tinyssh up to 20250501 are impacted, with the vulnerability requiring local execution and high attack complexity. A public exploit has been disclosed, and vendor patches are available in version 20260301.

Information Disclosure Jwt Attack
NVD VulDB GitHub
CVSS 4.0
1.1
EPSS
0.0%
CVE-2026-3564 CRITICAL Act Now

A cryptographic authentication bypass vulnerability in ConnectWise ScreenConnect allows remote attackers who gain access to server-level cryptographic material to authenticate as any user and obtain elevated privileges. The vulnerability affects all ScreenConnect versions prior to 26.1 and carries a CVSS score of 9.0, indicating critical severity. While not currently listed in CISA's KEV catalog and with no public proof-of-concept available, the vulnerability's authentication bypass nature and potential for complete system compromise make it a high-priority patching target.

Authentication Bypass Jwt Attack Screenconnect
NVD VulDB
CVSS 3.1
9.0
EPSS
0.0%
CVE-2026-4258 npm HIGH PATCH This Week

A cryptographic vulnerability in the Stanford Javascript Crypto Library (SJCL) allows attackers to recover victims' ECDH private keys through a missing point-on-curve validation flaw. The vulnerability affects all versions of SJCL and enables remote attackers to send specially crafted off-curve public keys and observe ECDH outputs to extract private key material. A proof-of-concept exploit is publicly available, though the vulnerability is not currently listed in CISA KEV and has no EPSS score assigned yet.

Information Disclosure Debian Oracle Jwt Attack Sjcl
NVD GitHub VulDB
CVSS 3.1
7.5
EPSS
0.0%
CVE-2026-27962 PyPI CRITICAL PATCH Act Now

A critical authentication bypass vulnerability in authlib's JWT signature verification allows attackers to forge arbitrary tokens by injecting their own cryptographic keys through the JWT header. The flaw affects all versions of authlib prior to 1.6.9 when applications use key resolution callbacks that can return None (common in JWKS-based authentication flows). A working proof-of-concept exists demonstrating complete authentication bypass, enabling attackers to impersonate any user or assume administrative privileges without valid credentials.

Python Docker Deserialization Red Hat Jwt Attack +1
NVD GitHub VulDB
CVSS 3.1
9.1
EPSS
0.0%
CVE-2025-52648 MEDIUM This Month

A security vulnerability in HCL AION (CVSS 4.8). Remediation should follow standard vulnerability management procedures.

Information Disclosure Jwt Attack
NVD VulDB
CVSS 3.1
4.8
EPSS
0.0%
CVE-2026-21002 MEDIUM This Month

Galaxy Store prior to version 4.6.03.8 contains an improper cryptographic signature verification vulnerability that allows a local attacker to install arbitrary applications without proper authorization. An attacker with physical or local access to a device can bypass the signature validation mechanism, enabling installation of malicious or unauthorized apps. While the CVSS score of 5.9 is moderate, the integrity impact is high, making this a meaningful threat to device security and app ecosystem integrity.

Information Disclosure Jwt Attack
NVD
CVSS 4.0
5.9
EPSS
0.0%
CVE-2026-20997 MEDIUM This Month

Smart Switch prior to version 3.7.69.15 contains an improper cryptographic signature verification vulnerability that allows remote attackers to bypass authentication mechanisms. The vulnerability has a CVSS score of 5.3 with network-based attack vector and low complexity, requiring only user interaction. While no public exploit or KEV status has been confirmed, the authentication bypass capability presents a moderate risk for unauthorized access to affected devices.

Authentication Bypass Jwt Attack
NVD VulDB
CVSS 4.0
5.3
EPSS
0.2%
CVE-2026-20989 LOW Monitor

This vulnerability involves improper cryptographic signature verification in the Font Settings component of Samsung devices prior to the March 2026 Security Update Release 1. A physical attacker can bypass signature validation to install custom fonts, potentially leading to integrity compromise of system font resources. While the CVSS score is moderate at 5.1, the attack requires physical access and user interaction, limiting real-world exploitation frequency.

Information Disclosure Jwt Attack
NVD VulDB
CVSS 3.1
2.4
EPSS
0.0%
CVE-2026-3562 HIGH This Week

CVE-2026-3562 is an authentication bypass vulnerability in Philips Hue Bridge's HAP (HomeKit Accessory Protocol) implementation, specifically within the ed25519_sign_open function that fails to properly verify Ed25519 cryptographic signatures. Network-adjacent attackers can exploit this flaw without authentication to execute arbitrary code on affected Hue Bridge installations. The CVSS score of 6.3 reflects moderate severity with local network access requirements, though the authentication bypass nature elevates real-world risk for smart home environments.

Authentication Bypass RCE Jwt Attack
NVD
CVSS 3.1
8.8
EPSS
0.0%
CVE-2026-29000 Maven CRITICAL POC PATCH Act Now

JWT authentication bypass in pac4j-jwt before 4.5.9/5.7.9/6.3.3 when processing encrypted JWTs. PoC available.

Authentication Bypass Jwt Attack
NVD VulDB
CVSS 4.0
9.3
EPSS
0.1%
CVE-2026-24807 Maven MEDIUM This Month

Improper Verification of Cryptographic Signature vulnerability in liuyueyi quick-media (plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util modules). This vulnerability is associated with program files SeekableOutputStream.Java.

Apache Java Information Disclosure Jwt Attack
NVD GitHub VulDB
CVSS 4.0
5.3
EPSS
0.0%
CVE-2025-64787 LOW Monitor

Improper verification of cryptographic signatures in Adobe Acrobat Reader versions up to 24.001.30264, 20.005.30803, and 25.001.20982 allows local attackers to bypass cryptographic protections and gain limited unauthorized write access to PDF documents. The vulnerability requires user interaction with a malicious or crafted PDF containing an improperly signed element. With a CVSS score of 3.3 and local attack vector, this represents a low-severity security feature bypass affecting document integrity verification.

Authentication Bypass Adobe Jwt Attack
NVD
CVSS 3.1
3.3
EPSS
0.0%
CVE-2025-64786 LOW Monitor

Improper verification of cryptographic signatures in Adobe Acrobat Reader and Acrobat DC versions up to 24.001.30273, 25.001.20982, and 20.005.30803 allows local attackers to bypass security features and gain limited unauthorized write access to PDF documents. Exploitation requires user interaction with a malicious or specially crafted cryptographic signature embedded in a PDF file. No active exploitation has been confirmed at the time of analysis.

Authentication Bypass Adobe Jwt Attack
NVD
CVSS 3.1
3.3
EPSS
0.0%
CVE-2025-40934 CRITICAL PATCH Act Now

XML-Sig versions 0.27 through 0.67 for Perl incorrectly validates XML files if signatures are omitted. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 3.1
9.3
EPSS
0.0%
CVE-2025-34324 HIGH POC This Month

GoSign Desktop versions 2.4.0 and earlier use an unsigned update manifest for distributing application updates. Rated high severity (CVSS 7.0), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Windows RCE Apple macOS Microsoft +2
NVD
CVSS 4.0
7.0
EPSS
0.0%
CVE-2025-64740 HIGH This Month

Improper verification of cryptographic signature in the installer for Zoom Workplace VDI Client for Windows may allow an authenticated user to conduct an escalation of privilege via local access. Rated high severity (CVSS 7.5). No vendor patch available.

Windows Privilege Escalation Microsoft Jwt Attack Workplace Virtual Desktop Infrastructure
NVD
CVSS 3.1
7.5
EPSS
0.0%
CVE-2025-64186 Go HIGH POC PATCH This Week

Evervault is a payment security solution. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Information Disclosure Jwt Attack Evervault
NVD GitHub
CVSS 3.1
8.7
EPSS
0.0%
CVE-2025-64456 HIGH This Month

In JetBrains ReSharper before 2025.2.4 missing signature verification in DPA Collector allows local privilege escalation. Rated high severity (CVSS 8.4), this vulnerability is low attack complexity. No vendor patch available.

Privilege Escalation Jwt Attack Resharper
NVD
CVSS 3.1
8.4
EPSS
0.0%
CVE-2025-55278 HIGH This Month

Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Jwt Attack
NVD
CVSS 3.1
8.1
EPSS
0.0%
CVE-2025-43468 MEDIUM PATCH This Month

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

Information Disclosure Apple Jwt Attack Intel
NVD
CVSS 3.1
5.5
EPSS
0.0%
CVE-2025-43390 MEDIUM This Month

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Apple macOS Jwt Attack Intel
NVD
CVSS 3.1
5.5
EPSS
0.0%
CVE-2025-7937 HIGH This Month

There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X12STW . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD
CVSS 3.1
7.2
EPSS
0.0%
CVE-2025-6198 HIGH This Month

There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X13SEM-F . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD
CVSS 3.1
7.2
EPSS
0.0%
CVE-2025-59334 CRITICAL POC PATCH Act Now

Linkr is a lightweight file delivery system that downloads files from a webserver. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

RCE Jwt Attack Linkr
NVD GitHub
CVSS 3.1
9.6
EPSS
0.1%
CVE-2025-20248 MEDIUM This Month

A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.

Authentication Bypass Apple Cisco Jwt Attack
NVD
CVSS 3.1
6.0
EPSS
0.0%
CVE-2025-52550 HIGH This Week

E3 Site Supervisor Control (firmware version < 2.31F01) firmware upgrade packages are unsigned. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack E3 Supervisory Controller Firmware
NVD
CVSS 4.0
8.6
EPSS
0.0%
CVE-2025-30064 HIGH This Month

An insufficiently secured internal function allows session generation for arbitrary users. Rated high severity (CVSS 8.8). No vendor patch available.

RCE Jwt Attack
NVD
CVSS 4.0
8.8
EPSS
0.0%
CVE-2025-57801 Go HIGH POC PATCH This Week

gnark is a zero-knowledge proof system framework. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Information Disclosure Jwt Attack Gnark
NVD GitHub
CVSS 4.0
8.6
EPSS
0.0%
CVE-2025-55229 MEDIUM This Month

Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Windows Authentication Bypass Microsoft Jwt Attack Windows 10 1507 +12
NVD
CVSS 3.1
5.3
EPSS
0.1%
CVE-2025-4371 HIGH This Month

A potential vulnerability was reported in the Lenovo 510 FHD and Performance FHD web cameras that could allow an attacker with physical access to write arbitrary firmware updates to the device over a. Rated high severity (CVSS 7.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack Lenovo
NVD
CVSS 4.0
7.0
EPSS
0.0%
CVE-2025-40758 HIGH This Week

A vulnerability has been identified in Mendix SAML (Mendix 10.12 compatible) (All versions < V4.0.3), Mendix SAML (Mendix 10.21 compatible) (All versions < V4.1.2), Mendix SAML (Mendix 9.24. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Information Disclosure Jwt Attack
NVD
CVSS 3.1
8.7
EPSS
0.0%
CVE-2025-54982 CRITICAL This Week

An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD
CVSS 3.1
9.6
EPSS
0.0%
CVE-2025-8454 CRITICAL PATCH This Week

It was discovered that uscan, a tool to scan/watch upstream sources for new releases of software, included in devscripts (a collection of scripts to make the life of a Debian Package maintainer. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Debian Jwt Attack Suse Devscripts
NVD
CVSS 3.1
9.8
EPSS
0.0%
CVE-2025-47949 npm CRITICAL PATCH This Week

samlify is a Node.js library for SAML single sign-on. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure Node.js Jwt Attack Samlify
NVD GitHub
CVSS 4.0
9.9
EPSS
0.2%
CVE-2025-47934 npm HIGH PATCH This Month

OpenPGP.js is a JavaScript implementation of the OpenPGP protocol. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD GitHub
CVSS 4.0
8.7
EPSS
0.2%
CVE-2025-20181 MEDIUM This Month

A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RCE Apple Cisco Jwt Attack
NVD
CVSS 3.0
6.8
EPSS
0.1%
CVE-2025-33074 HIGH This Week

Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.

Information Disclosure Microsoft Jwt Attack Azure Functions
NVD
CVSS 3.1
7.5
EPSS
0.4%
CVE-2025-2866 LOW Monitor

Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation. Rated low severity (CVSS 2.4), this vulnerability is low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack Libreoffice
NVD
CVSS 4.0
2.4
EPSS
0.1%
CVE-2025-2764 HIGH This Week

CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity. No vendor patch available.

RCE Jwt Attack Autokit
NVD
CVSS 3.0
8.0
EPSS
0.0%
CVE-2025-2763 MEDIUM This Month

CarlinKit CPC200-CCPA Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RCE Jwt Attack Autokit
NVD
CVSS 3.0
6.8
EPSS
0.0%
CVE-2025-43903 MEDIUM PATCH This Month

NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.

Information Disclosure Red Hat Jwt Attack Poppler Suse
NVD
CVSS 3.1
4.3
EPSS
0.0%
CVE-2025-20178 MEDIUM This Month

A vulnerability in the web-based management interface of Cisco Secure Network Analytics could allow an authenticated, remote attacker with valid administrative credentials to execute arbitrary. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.

Information Disclosure Cisco Jwt Attack Secure Network Analytics
NVD
CVSS 3.1
6.0
EPSS
0.1%
CVE-2025-29915 HIGH PATCH This Week

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure Jwt Attack Suricata Suse
NVD GitHub
CVSS 3.1
7.5
EPSS
0.1%
CVE-2025-27813 HIGH This Month

MSI Center before 2.0.52.0 has Missing PE Signature Validation. Rated high severity (CVSS 8.1), this vulnerability is no authentication required. No vendor patch available.

Information Disclosure Jwt Attack
NVD
CVSS 3.1
8.1
EPSS
0.0%
CVE-2025-31489 Go HIGH PATCH This Week

MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Red Hat Jwt Attack Suse
NVD GitHub
CVSS 4.0
8.7
EPSS
4.9%
CVE-2025-31335 MEDIUM PATCH This Month

The OpenSAML C++ library before 3.3.1 allows forging of signed SAML messages via parameter manipulation (when using SAML bindings that rely on non-XML signatures). Rated medium severity (CVSS 4.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Information Disclosure Red Hat Jwt Attack Suse
NVD
CVSS 3.1
4.0
EPSS
0.1%
CVE-2025-29775 npm CRITICAL PATCH Act Now

xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Node.js Red Hat Jwt Attack
NVD GitHub
CVSS 4.0
9.3
EPSS
0.1%
CVE-2025-29774 npm CRITICAL PATCH Act Now

xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Node.js Red Hat Jwt Attack
NVD GitHub
CVSS 4.0
9.3
EPSS
0.2%
CVE-2025-25292 Ruby CRITICAL POC PATCH CERT-EU Act Now

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Authentication Bypass Jwt Attack Omniauth Saml Ruby Saml Storagegrid
NVD GitHub
CVSS 4.0
9.3
EPSS
4.1%
CVE-2025-25291 Ruby CRITICAL POC PATCH THREAT CERT-EU Act Now

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 13.8%.

Authentication Bypass Jwt Attack Omniauth Saml Ruby Saml Storagegrid
NVD GitHub
CVSS 4.0
9.3
EPSS
13.8%
CVE-2025-20143 MEDIUM This Month

A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.

Authentication Bypass Apple Cisco Jwt Attack Ios Xr
NVD
CVSS 3.1
6.7
EPSS
0.0%
CVSS 5.4
MEDIUM PATCH This Month

Algorithm allow-list bypass in PyJWT 2.9.0-2.12.1 permits an attacker who controls a registered JWK/JWKS private key to circumvent caller-enforced algorithm restrictions during JWT signature verification. The library correctly checks the token header's alg claim against the caller-supplied allow-list, but then performs the actual cryptographic verification using the algorithm bound to the PyJWK object rather than the header-declared algorithm - creating a exploitable mismatch. Specifically, the documented PyJWKClient.get_signing_key_from_jwt() flow is affected, meaning applications relying on this pattern for algorithm-restricted JWT validation may accept tokens signed with algorithms they explicitly prohibited. No public exploit has been identified at time of analysis and the vulnerability is not listed in CISA KEV.

Authentication Bypass Python Jwt Attack
NVD GitHub
EPSS 0% CVSS 5.9
MEDIUM This Month

Signature policy bypass in Red Hat Build of Keycloak's JWE request object handling allows unauthenticated remote attackers to inject unauthorized claims into the OpenID Connect authorization flow. When a JWE-encrypted request object is submitted and its decrypted content is raw JSON, Keycloak improperly skips signature verification, violating both OIDC Core and Financial-grade API (FAPI) signing requirements. No public exploit code exists at time of analysis, but the integrity-only impact (CVSS I:H) is directly relevant to authorization trust boundaries, making this high-priority for FAPI-compliant or financial-sector Keycloak deployments.

Authentication Bypass Jwt Attack
NVD
EPSS 0% CVSS 8.7
HIGH PATCH This Week

Arbitrary root code execution in Phoenix Contact PLCnext Control devices (all firmware before 2026.0.3) is reachable by an authenticated low-privileged Engineer user who installs APP packages from the PLCnext Store through the Web-based Management (WBM) interface. Because the device never verifies the integrity or signature of the downloaded app (CWE-347, tagged JWT Attack), a tampered package runs as root and can compromise the integrity and availability of the controller. No public exploit is identified at time of analysis and EPSS is low (0.06%, 18th percentile), but the flaw is network-reachable with low attack complexity and a vendor patch (2026.0.3) is available.

RCE Jwt Attack
NVD
CVSS 9.1
CRITICAL PATCH Act Now

Unauthenticated agent token theft in Coder v2 (self-hosted developer workspace platform) stems from azureidentity.Validate() verifying the PKCS#7 signer's certificate chain but skipping signature verification of the signed content itself. Remote attackers who know a target VM's vmId (a UUIDv4) can forge a PKCS#7 envelope containing a legitimate Azure certificate alongside attacker-controlled content and POST it to the unauthenticated /api/v2/workspaceagents/azure-instance-identity endpoint to receive the victim workspace agent's session token, which then unlocks Git SSH keys, OAuth tokens for GitHub/GitLab/Bitbucket, and workspace secrets. No public exploit identified at time of analysis, but the vulnerability is vendor-confirmed via GHSA-6x44-w3xg-hqqf and a detailed root-cause analysis with attack-path diagram is published.

RCE Gitlab Microsoft +2
NVD GitHub
EPSS 0% CVSS 7.4
HIGH PATCH This Week

Authentication bypass in epa4all-client allows MITM attackers positioned within the TI (Telematikinfrastruktur) network to capture SMC-B-signed authentication material by substituting a forged OIDC discovery document. The vulnerability affects all versions prior to 1.2.2 and requires the attacker to intercept TLS connections between the client and Identity Provider. No public exploit identified at time of analysis.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 8.0
HIGH PATCH This Week

Zen Browser's auto-update mechanism delivered unsigned code to all users due to deliberately removed MAR signature verification inherited from Firefox. The browser shipped with Mozilla's updater binary stripped of all cryptographic verification code and served update packages containing zero cryptographic signatures. Compromise of the update server or GitHub Actions pipeline allowed arbitrary code execution on all Zen installations without cryptographic chain-of-trust protection. Version 1.19.9b restores MAR signing with RSA-4096 keys and certificate verification in the updater binary.

RCE Mozilla Jwt Attack
NVD GitHub
EPSS 0% CVSS 9.1
CRITICAL PATCH Act Now

Plunk is an open-source email platform built on top of AWS SES. Prior to version 0.9.0, the /webhooks/sns endpoint accepts Amazon SNS notification payloads from unauthenticated requests without verifying the SNS signature, certificate, or topic ARN, meaning anyone can forge a valid-looking webhook request. This allows an unauthenticated attacker to spoof SNS events to trigger workflow automations, unsubscribe contacts, manipulate email delivery metrics, and potentially exhaust billing credits. This issue has been patched in version 0.9.0.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Signature verification bypass in bitcoinj-core library allows attackers to forge Bitcoin transaction validations by exploiting fast-path optimization flaws in P2PKH and P2WPKH script execution. Versions 0.15 through 0.17.0 fail to verify that attacker-supplied public keys match the hash committed to in transaction outputs, enabling arbitrary keypairs to satisfy local transaction validation checks. While this does not affect SPV (Simple Payment Verification) nodes that follow proof-of-work without signature verification, applications using the correctlySpends() method for transaction validation or pre-signing checks are vulnerable to accepting fraudulent transactions. Vendor-released patch available in version 0.17.1, fixes confirmed in GitHub commits 2bc5653c and b575a682. No active exploitation confirmed (not in CISA KEV); EPSS data unavailable.

RCE Java Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

Consensus divergence in Zebra 4.3.1 enables blockchain network partitioning through crafted transparent transactions with invalid sighash types. Insufficient error handling at the Rust-to-C++ FFI boundary causes Zebra to incorrectly accept transactions with undefined hash types by reusing stale buffer data from prior valid signature checks, while zcashd correctly rejects these transactions. Attackers can exploit this by chaining OP_CHECKSIGVERIFY with OP_CHECKSIG opcodes using invalid hash types to trigger acceptance on Zebra nodes but rejection on zcashd nodes, creating a consensus split that could enable double-spend attacks. Vendor-released patch: 4.4.0. No public exploit identified at time of analysis, but the technical mechanism is fully disclosed in the GitHub advisory GHSA-gq4h-3grw-2rhv.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

The Go toolchain's module proxy validation can be bypassed by attackers controlling untrusted GOPROXY or GOSUMDB endpoints, allowing delivery of malicious toolchain versions that execute with developer privileges. When the go command downloads a different toolchain version (via GOTOOLCHAIN, go.mod, or go.work directives), a malicious proxy can serve altered toolchains by exploiting checksum database validation logic that incorrectly accepts empty responses. While EPSS indicates only 1% exploitation probability and CISA SSVC marks exploitation status as 'none', the total technical impact rating and network attack vector (AV:N) represent significant supply chain risk for organizations using non-default module proxies. Vendor patch available in Go 1.26.3 and 1.25.10.

Authentication Bypass Jwt Attack
NVD VulDB
EPSS 0% CVSS 2.9
LOW POC Monitor

Improper cryptographic signature verification in Dolibarr ERP CRM up to version 23.0.2 allows remote attackers to bypass signature validation in the Online Signature Module, potentially forging or manipulating signed transactions. The vulnerability affects the dol_verifyHash function and has been publicly disclosed with exploit code available, though exploitation requires high technical complexity and is not confirmed as actively exploited in production environments.

PHP Information Disclosure Jwt Attack
NVD VulDB GitHub
EPSS 0% CVSS 8.2
HIGH PATCH This Week

SAML signature validation in Admidio's Identity Provider implementation can be completely bypassed due to discarded return values in authentication flows. The validateSignature() method returns error strings on failure but both call sites (SSO and Single Logout handlers) discard the return value, allowing unsigned or invalidly-signed SAML requests to proceed. Attackers can forge AuthnRequests to exfiltrate logged-in users' personal data (username, email, real name, role memberships) to attacker-controlled endpoints, or forge LogoutRequests to terminate victim sessions and cascade logout across federated Service Providers. The smc_require_auth_signed configuration setting provides no protection. Public exploit code exists (PoC in GitHub advisory). CVSS 8.2 reflects network-accessible attack with no authentication required, though practical exploitation of the SSO path requires victim to have an active session. No active exploitation confirmed at time of analysis.

PHP Denial Of Service CSRF +1
NVD GitHub
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

Improper Verification of Cryptographic Signature (CWE-347) in Elastic Package Registry could allow an attacker positioned to intercept network traffic, or to otherwise influence the contents served to a self-hosted registry, to substitute a tampered package without the integrity check failing closed.

Information Disclosure Elastic Jwt Attack
NVD
EPSS 0% CVSS 8.2
HIGH PATCH This Week

Authentication Bypass vulnerability exists in Netmaker versions prior to 1.5.0. The VerifyHostToken function in logic/jwts.go fails to validate the JWT signature when verifying host tokens. An attacker can forge a JWT signed with any arbitrary key and use it to impersonate any host in the network, gaining access to sensitive information

Authentication Bypass Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 2.9
LOW POC PATCH Monitor

Improper verification of cryptographic signatures in Cesanta Mongoose versions up to 7.20 allows remote attackers to bypass GCM authentication tag validation in the mg_aes_gcm_decrypt function. The vulnerability has high attack complexity and requires no user interaction, but provides only integrity impact (not confidentiality or availability). Publicly available exploit code exists, and vendor has released patched version 7.21.

Information Disclosure Jwt Attack
NVD VulDB GitHub
EPSS 0% CVSS 7.0
HIGH PATCH This Week

Signature duplication in AWS Tough TUF client prior to v0.22.0 allows authenticated attackers to bypass threshold signature requirements for delegated role metadata by reusing a single valid signature multiple times. The flaw undermines TUF's multi-signature integrity model, enabling acceptance of forged metadata with reduced cryptographic validation. Vendor patch available (tough-v0.22.0, tuftool-v0.15.0). No public exploit code or active exploitation confirmed at time of analysis, but CVSS 7.0 reflects high integrity impact to both vulnerable and downstream systems.

Authentication Bypass Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

Missing JWT signature verification in AWS Ops Wheel enables remote unauthenticated attackers to forge administrative tokens and gain complete control over all application data and Cognito user accounts across all tenants. This critical authentication bypass (CVSS 9.8) has a vendor-released patch available via GitHub PR #164. EPSS data not available, but the combination of zero authentication requirements, network attack vector, and multi-tenant data exposure creates immediate exploitation risk for all deployments.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

The Nimiq staking contract accepts UpdateValidator transactions that omit proof-of-knowledge validation when updating voting keys, enabling rogue-key attacks against BLS signature aggregation used in Tendermint block justification. An attacker who can predict the next epoch's validator set could forge quorum-appearing block justifications with a single signature. Exploitation is constrained by the requirement to predict future validator set composition via VRF, making real-world attacks unlikely despite the critical cryptographic impact. Vendor-released patch v1.3.0 addresses the vulnerability.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 9.1
CRITICAL PATCH Exploit Unlikely Act Now

Cryptographic signature verification bypass in ASP.NET Core 10.0 enables remote unauthenticated attackers to forge authentication tokens and gain unauthorized access to protected resources. Tagged as a JWT attack involving authentication bypass, this vulnerability allows complete compromise of confidentiality and integrity without requiring any special conditions (AV:N/AC:L/PR:N/UI:N). Microsoft has released a security update addressing this flaw. No active exploitation confirmed in CISA KEV at time of analysis, though the authentication bypass nature and network-accessible attack surface present significant risk for widely deployed ASP.NET Core applications.

Authentication Bypass Red Hat Jwt Attack
NVD VulDB GitHub
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

OpenClaw 2026.3.22 through 2026.3.30 contain a signature verification bypass in the Nostr direct message (DM) ingress handler that processes pairing challenges before validating event signatures. Remote unauthenticated attackers can send forged DMs to create bogus pending pairing entries, exhaust shared pairing capacity, and trigger unbounded relay and logging work on the Nostr channel, causing denial of service. No public exploit code or active exploitation has been confirmed; a vendor patch is available in version 2026.3.31 and later.

Authentication Bypass Jwt Attack
NVD GitHub
EPSS 0% CVSS 7.5
HIGH This Week

Signature validation bypass in Redsys payment gateway plugin (WooCommerce) allows remote attackers to mark unpaid orders as completed without actual payment. Unauthenticated attackers who obtain a valid order key and amount can forge payment callbacks across Redsys, Bizum, and Google Pay flows, enabling fraudulent order fulfillment. Affects versions ≤7.0.0 of 'Payment Gateway for Redsys & WooCommerce Lite' WordPress plugin. CVSS 7.5 (AV:N/AC:L/PR:N/UI:N) indicates trivial remote exploitation, though EPSS data unavailable. No CISA KEV listing or public POC identified at time of analysis. Vendor patch released in changeset 3501998.

WordPress Information Disclosure Google +1
NVD
EPSS 0% CVSS 6.9
MEDIUM This Month

Authentication bypass in Siemens SINEC NMS versions prior to V4.0 SP3 with UMC allows unauthenticated remote attackers to gain unauthorized access due to insufficient user identity validation in the UMC component (CWE-347: Improper Verification of Cryptographic Signature). The vulnerability enables network-based attacks with low complexity requiring no user interaction (CVSS 7.3, AV:N/AC:L/PR:N/UI:N), granting partial access to confidentiality, integrity, and availability. ZDI tracking ID CAN-27564 suggests coordinated disclosure. No active exploitation (CISA KEV) or public exploit code confirmed at time of analysis, though JWT-related authentication bypasses are well-understood attack primitives.

Authentication Bypass Jwt Attack
NVD
EPSS 0% CVSS 7.2
HIGH PATCH This Week

Cryptographic signature bypass in Palo Alto Networks Cortex XSOAR and XSIAM Microsoft Teams integrations (versions 1.5.0 through 1.5.51) allows unauthenticated remote attackers to access and modify protected resources. The vulnerability stems from improper JWT verification (CWE-347), enabling attackers to forge authentication tokens. With CVSS 7.2 (High complexity, network-accessible, no privileges required) and tags indicating JWT attack vectors and information disclosure potential, this represents a critical integration security flaw requiring immediate patching to version 1.5.52 or later.

Information Disclosure Microsoft Jwt Attack
NVD VulDB
EPSS 0% CVSS 7.6
HIGH PATCH This Week

Signature verification bypass in wolfSSL's ECCSI implementation allows adjacent network attackers to forge cryptographic signatures for any message and identity without authentication. The wc_VerifyEccsiHash function fails to validate that signature scalars r and s fall within the required mathematical range [1, q-1], enabling attackers with knowledge of public constants to craft universally-valid forged signatures. This defeats the cryptographic integrity guarantees of ECCSI-signed data, particularly affecting JWT authentication systems and identity-based cryptographic protocols. No public exploit identified at time of analysis.

Information Disclosure Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 8.1
HIGH PATCH This Week

Signature verification bypass in BSV Ruby SDK versions 0.3.1 through 0.8.1 allows authenticated attackers to forge blockchain identity certificates. The WalletClient#acquire_certificate method persists certificates without validating certifier signatures in both 'direct' acquisition (where attackers supply all fields including forged signatures) and 'issuance' protocols (where malicious certifier endpoints inject invalid signatures). Forged certificates appear authentic to list_certificates and prove_certificate operations, enabling impersonation attacks. CVSS 8.1 (AV:N/AC:L/PR:L/UI:N) reflects network-accessible exploitation requiring low-privilege authentication. No public exploit identified at time of analysis.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 4.2
MEDIUM PATCH This Month

LightRAG API authentication can be bypassed via JWT algorithm confusion attack, where an attacker forges tokens by specifying 'alg': 'none' in the JWT header to impersonate any user including administrators. The vulnerability exists in the validate_token() method in lightrag/api/auth.py (line 128), which accepts the unsigned 'none' algorithm despite not explicitly permitting it, allowing unauthenticated remote attackers to gain unauthorized access to protected resources. Publicly available proof-of-concept code demonstrates the attack; vendor has released a patch addressing the root cause of improper algorithm validation.

Authentication Bypass Python Jwt Attack
NVD GitHub
CVSS 7.5
HIGH PATCH This Week

LightRAG's JWT authentication can be bypassed via a hardcoded default secret 'lightrag-jwt-default-secret' when TOKEN_SECRET is not configured. Unauthenticated attackers can forge valid tokens to access protected API endpoints in installations running v1.4.10 with AUTH_ACCOUNTS enabled but TOKEN_SECRET unset. CVSS 7.5 (High) reflects network-accessible confidentiality breach with no authentication required. No public exploit identified at time of analysis, though the hardcoded secret is publicly documented in the vulnerability disclosure. EPSS data not available for this CVE.

AI / ML Jwt Attack Hardcoded Credentials
NVD GitHub
EPSS 0% CVSS 4.0
MEDIUM This Month

Denial of service in rust-rpm-sequoia allows local attackers to crash RPM signature verification by submitting specially crafted RPM files that trigger unhandled errors in OpenPGP parsing, preventing legitimate package management operations. CVSS 4.0 (low severity), local attack vector, non-authenticating. No public exploit code or active exploitation confirmed.

Denial Of Service Red Hat Jwt Attack
NVD VulDB
EPSS 0% CVSS 8.1
HIGH PATCH This Week

Authentication bypass in OneUptime SAML SSO implementation allows authenticated attackers to impersonate arbitrary users by exploiting XML signature verification logic flaws. Affected versions prior to 10.0.42 decouple signature validation from identity extraction, enabling XML injection attacks where an unsigned assertion with attacker-controlled identity precedes a legitimately signed assertion. EPSS and exploitation signals indicate publicly available exploit code exists with moderate technical complexity (CVSS AC:L, PR:L). No confirmed active exploitation (not in CISA KEV).

Authentication Bypass Jwt Attack
NVD GitHub
EPSS 0% CVSS 9.1
CRITICAL PATCH Act Now

Finite-field Diffie-Hellman (FFDH) in Mbed TLS 3.5.x, 3.6.0 through 3.6.5, and TF-PSA-Crypto 1.0 lacks contributory behavior due to improper validation of peer-supplied parameters, allowing an attacker to restrict the shared secret to a small set of predictable values. While the vulnerability does not directly impact TLS (which does not depend on contributory behavior), it poses a significant risk to protocols that do rely on this property, including those where an active network attacker or malicious peer can exploit the weakness. No CVSS score or public exploit code has been assigned at the time of analysis.

Information Disclosure Red Hat Jwt Attack +1
NVD VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

JWT token forgery in appsup-dart/jose library (versions prior to 0.3.5+1) enables remote attackers to bypass authentication by embedding attacker-controlled public keys in JOSE headers. The library incorrectly accepts header-supplied 'jwk' parameters as trusted verification keys without validating they exist in the application's trusted keystore, allowing unauthenticated attackers to sign arbitrary tokens with their own key pairs. EPSS data not available; no public exploit identified at time of analysis, though exploitation requires only standard JWT manipulation tools.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

Botan cryptography library versions 3.0.0 through 3.10.x fail to verify OCSP response signatures during X.509 certificate path validation, allowing attackers to forge certificate status responses and potentially bypass revocation checks. This integrity bypass affects any application using Botan for TLS or certificate validation and requires network positioning but not authentication. The vulnerability was patched in version 3.11.0.

Information Disclosure Red Hat Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 8.4
HIGH PATCH This Week

Zebra cryptocurrency nodes prior to version 4.3.0 can be forced into consensus split by malicious miners who craft blocks containing V5 transactions with matching txids but invalid authorization data. The vulnerability stems from a cache lookup that used ZIP-244 txid (which excludes authorization data) to bypass full verification, allowing nodes to accept blocks with invalid signatures. While this does not enable invalid transaction acceptance, it isolates vulnerable nodes from the Zcash network, creating fork conditions exploitable for service disruption and potential double-spend scenarios against partitioned nodes. No public exploit code or CISA KEV listing exists, but the technical complexity is low for actors with mining capabilities. Affected products are zebrad and zebra-consensus Rust packages supporting Network Upgrade 5 (V5 transactions). Vendor-released patch: Zebra 4.3.0.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Authentication bypass in OpenClaw's Feishu webhook integration (pre-2026.3.12) allows unauthenticated remote attackers to inject forged events and trigger arbitrary downstream tool execution. The vulnerability occurs when administrators configure only verificationToken without encryptKey, enabling attackers to craft malicious webhook payloads that bypass validation. No public exploit identified at time of analysis, though CVSS 8.8 reflects network accessibility (AV:N), zero complexity (AC:L), and no privileges required (PR:N).

Authentication Bypass Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

The digitalbazaar/forge npm package accepts forged Ed25519 signatures due to missing scalar canonicalization checks, allowing authentication and authorization bypass in applications that rely on signature uniqueness. All versions since Ed25519 implementation are affected (confirmed through version 1.3.3), identified as pkg:npm/node-forge. Publicly available exploit code exists with a complete proof-of-concept demonstrating how attackers can create multiple valid signatures for the same message by adding the group order L to the scalar component S, bypassing deduplication, replay protection, and signed-object canonicalization checks. The vendor has released a patch via commit bdecf11571c9f1a487cc0fe72fe78ff6dfa96b85.

Authentication Bypass Node.js OpenSSL +3
NVD GitHub VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

XML Digital Signature validation in russellhaering/goxmldsig library prior to version 1.6.0 can be bypassed due to a Go loop variable capture bug, allowing remote unauthenticated attackers to forge or manipulate XML signatures without detection. The vulnerability affects applications using Go versions before 1.22 or older go.mod configurations, enabling integrity violations in SAML authentication, document signing, and other XML-DSig implementations. EPSS score of 0.02% suggests low observed exploitation probability, with no confirmed active exploitation (not in CISA KEV). Vendor patch available in version 1.6.0.

Information Disclosure Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 6.2
MEDIUM PATCH This Month

A downgrade vulnerability affecting Intel-based Mac computers allows malicious applications to bypass code-signing restrictions and access user-sensitive data. The vulnerability impacts macOS Sequoia (versions before 15.7.5), macOS Sonoma (versions before 14.8.5), macOS Tahoe (versions before 26.3 and 26.4), and affects all Intel-based Mac systems running vulnerable versions. An attacker can craft an application that exploits insufficient code-signing validation to downgrade security protections and exfiltrate sensitive user information.

Information Disclosure Apple macOS +2
NVD VulDB
EPSS 0% CVSS 8.1
HIGH PATCH This Week

Cryptographic signature bypass in jsrsasign before 11.1.1 allows remote attackers to forge DSA signatures and X.509 certificates by supplying malicious domain parameters (g=1, y=1, r=1) that cause verification functions to incorrectly validate any message hash. This actively undermines authentication and integrity checks in applications using the library for JWT validation, certificate verification, or digital signatures. EPSS score is negligible (0.01%) despite proof-of-concept availability, and CISA SSVC classifies this as requiring proof-of-concept but not automatable, indicating targeted exploitation risk rather than widespread scanning.

Information Disclosure Jwt Attack
NVD GitHub VulDB
EPSS 0% CVSS 2.9
LOW POC PATCH Monitor

PuTTY versions up to 0.83 contain a weak authentication vulnerability in the Ed25519 signature verification function (eddsa_verify in crypto/ecc-ssh.c) that allows remote attackers to potentially forge or manipulate digital signatures due to improper validation of Ed25519 signature components. While a public proof-of-concept exploit exists and the vulnerability affects signature verification, the real-world impact remains unproven, with CVSS 3.7 (low severity) and EPSS probability indicating exploitation is difficult and requires high complexity. The vendor (PuTTY developers) has already released a patch addressing this issue.

Information Disclosure Jwt Attack
NVD VulDB GitHub
EPSS 0% CVSS 1.1
LOW POC PATCH Monitor

A cryptographic signature verification flaw exists in tinyssh's Ed25519 signature handler (crypto_sign_ed25519_tinyssh.c) that allows improper validation of signatures, potentially enabling an attacker to forge or bypass signature checks. Affected versions of janmojzis tinyssh up to 20250501 are impacted, with the vulnerability requiring local execution and high attack complexity. A public exploit has been disclosed, and vendor patches are available in version 20260301.

Information Disclosure Jwt Attack
NVD VulDB GitHub
EPSS 0% CVSS 9.0
CRITICAL Act Now

A cryptographic authentication bypass vulnerability in ConnectWise ScreenConnect allows remote attackers who gain access to server-level cryptographic material to authenticate as any user and obtain elevated privileges. The vulnerability affects all ScreenConnect versions prior to 26.1 and carries a CVSS score of 9.0, indicating critical severity. While not currently listed in CISA's KEV catalog and with no public proof-of-concept available, the vulnerability's authentication bypass nature and potential for complete system compromise make it a high-priority patching target.

Authentication Bypass Jwt Attack Screenconnect
NVD VulDB
EPSS 0% CVSS 7.5
HIGH PATCH This Week

A cryptographic vulnerability in the Stanford Javascript Crypto Library (SJCL) allows attackers to recover victims' ECDH private keys through a missing point-on-curve validation flaw. The vulnerability affects all versions of SJCL and enables remote attackers to send specially crafted off-curve public keys and observe ECDH outputs to extract private key material. A proof-of-concept exploit is publicly available, though the vulnerability is not currently listed in CISA KEV and has no EPSS score assigned yet.

Information Disclosure Debian Oracle +2
NVD GitHub VulDB
EPSS 0% CVSS 9.1
CRITICAL PATCH Act Now

A critical authentication bypass vulnerability in authlib's JWT signature verification allows attackers to forge arbitrary tokens by injecting their own cryptographic keys through the JWT header. The flaw affects all versions of authlib prior to 1.6.9 when applications use key resolution callbacks that can return None (common in JWKS-based authentication flows). A working proof-of-concept exists demonstrating complete authentication bypass, enabling attackers to impersonate any user or assume administrative privileges without valid credentials.

Python Docker Deserialization +3
NVD GitHub VulDB
EPSS 0% CVSS 4.8
MEDIUM This Month

A security vulnerability in HCL AION (CVSS 4.8). Remediation should follow standard vulnerability management procedures.

Information Disclosure Jwt Attack
NVD VulDB
EPSS 0% CVSS 5.9
MEDIUM This Month

Galaxy Store prior to version 4.6.03.8 contains an improper cryptographic signature verification vulnerability that allows a local attacker to install arbitrary applications without proper authorization. An attacker with physical or local access to a device can bypass the signature validation mechanism, enabling installation of malicious or unauthorized apps. While the CVSS score of 5.9 is moderate, the integrity impact is high, making this a meaningful threat to device security and app ecosystem integrity.

Information Disclosure Jwt Attack
NVD
EPSS 0% CVSS 5.3
MEDIUM This Month

Smart Switch prior to version 3.7.69.15 contains an improper cryptographic signature verification vulnerability that allows remote attackers to bypass authentication mechanisms. The vulnerability has a CVSS score of 5.3 with network-based attack vector and low complexity, requiring only user interaction. While no public exploit or KEV status has been confirmed, the authentication bypass capability presents a moderate risk for unauthorized access to affected devices.

Authentication Bypass Jwt Attack
NVD VulDB
EPSS 0% CVSS 2.4
LOW Monitor

This vulnerability involves improper cryptographic signature verification in the Font Settings component of Samsung devices prior to the March 2026 Security Update Release 1. A physical attacker can bypass signature validation to install custom fonts, potentially leading to integrity compromise of system font resources. While the CVSS score is moderate at 5.1, the attack requires physical access and user interaction, limiting real-world exploitation frequency.

Information Disclosure Jwt Attack
NVD VulDB
EPSS 0% CVSS 8.8
HIGH This Week

CVE-2026-3562 is an authentication bypass vulnerability in Philips Hue Bridge's HAP (HomeKit Accessory Protocol) implementation, specifically within the ed25519_sign_open function that fails to properly verify Ed25519 cryptographic signatures. Network-adjacent attackers can exploit this flaw without authentication to execute arbitrary code on affected Hue Bridge installations. The CVSS score of 6.3 reflects moderate severity with local network access requirements, though the authentication bypass nature elevates real-world risk for smart home environments.

Authentication Bypass RCE Jwt Attack
NVD
EPSS 0% CVSS 9.3
CRITICAL POC PATCH Act Now

JWT authentication bypass in pac4j-jwt before 4.5.9/5.7.9/6.3.3 when processing encrypted JWTs. PoC available.

Authentication Bypass Jwt Attack
NVD VulDB
EPSS 0% CVSS 5.3
MEDIUM This Month

Improper Verification of Cryptographic Signature vulnerability in liuyueyi quick-media (plugins/svg-plugin/batik-codec-fix/src/main/java/org/apache/batik/ext/awt/image/codec/util modules). This vulnerability is associated with program files SeekableOutputStream.Java.

Apache Java Information Disclosure +1
NVD GitHub VulDB
EPSS 0% CVSS 3.3
LOW Monitor

Improper verification of cryptographic signatures in Adobe Acrobat Reader versions up to 24.001.30264, 20.005.30803, and 25.001.20982 allows local attackers to bypass cryptographic protections and gain limited unauthorized write access to PDF documents. The vulnerability requires user interaction with a malicious or crafted PDF containing an improperly signed element. With a CVSS score of 3.3 and local attack vector, this represents a low-severity security feature bypass affecting document integrity verification.

Authentication Bypass Adobe Jwt Attack
NVD
EPSS 0% CVSS 3.3
LOW Monitor

Improper verification of cryptographic signatures in Adobe Acrobat Reader and Acrobat DC versions up to 24.001.30273, 25.001.20982, and 20.005.30803 allows local attackers to bypass security features and gain limited unauthorized write access to PDF documents. Exploitation requires user interaction with a malicious or specially crafted cryptographic signature embedded in a PDF file. No active exploitation has been confirmed at the time of analysis.

Authentication Bypass Adobe Jwt Attack
NVD
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

XML-Sig versions 0.27 through 0.67 for Perl incorrectly validates XML files if signatures are omitted. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 7.0
HIGH POC This Month

GoSign Desktop versions 2.4.0 and earlier use an unsigned update manifest for distributing application updates. Rated high severity (CVSS 7.0), this vulnerability is low attack complexity. Public exploit code available and no vendor patch available.

Windows RCE Apple +4
NVD
EPSS 0% CVSS 7.5
HIGH This Month

Improper verification of cryptographic signature in the installer for Zoom Workplace VDI Client for Windows may allow an authenticated user to conduct an escalation of privilege via local access. Rated high severity (CVSS 7.5). No vendor patch available.

Windows Privilege Escalation Microsoft +2
NVD
EPSS 0% CVSS 8.7
HIGH POC PATCH This Week

Evervault is a payment security solution. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Information Disclosure Jwt Attack Evervault
NVD GitHub
EPSS 0% CVSS 8.4
HIGH This Month

In JetBrains ReSharper before 2025.2.4 missing signature verification in DPA Collector allows local privilege escalation. Rated high severity (CVSS 8.4), this vulnerability is low attack complexity. No vendor patch available.

Privilege Escalation Jwt Attack Resharper
NVD
EPSS 0% CVSS 8.1
HIGH This Month

Improper authentication in the API authentication middleware of HCL DevOps Loop allows authentication tokens to be accepted without proper validation of their expiration and cryptographic signature. Rated high severity (CVSS 8.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Jwt Attack
NVD
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is low attack complexity.

Information Disclosure Apple Jwt Attack +1
NVD
EPSS 0% CVSS 5.5
MEDIUM This Month

A downgrade issue affecting Intel-based Mac computers was addressed with additional code-signing restrictions. Rated medium severity (CVSS 5.5), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Apple macOS +2
NVD
EPSS 0% CVSS 7.2
HIGH This Month

There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X12STW . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD
EPSS 0% CVSS 7.2
HIGH This Month

There is a vulnerability in the Supermicro BMC firmware validation logic at Supermicro MBD-X13SEM-F . Rated high severity (CVSS 7.2), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD
EPSS 0% CVSS 9.6
CRITICAL POC PATCH Act Now

Linkr is a lightweight file delivery system that downloads files from a webserver. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

RCE Jwt Attack Linkr
NVD GitHub
EPSS 0% CVSS 6.0
MEDIUM This Month

A vulnerability in the installation process of Cisco IOS XR Software could allow an authenticated, local attacker to bypass Cisco IOS XR Software image signature verification and load unsigned. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.

Authentication Bypass Apple Cisco +1
NVD
EPSS 0% CVSS 8.6
HIGH This Week

E3 Site Supervisor Control (firmware version < 2.31F01) firmware upgrade packages are unsigned. Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack E3 Supervisory Controller Firmware
NVD
EPSS 0% CVSS 8.8
HIGH This Month

An insufficiently secured internal function allows session generation for arbitrary users. Rated high severity (CVSS 8.8). No vendor patch available.

RCE Jwt Attack
NVD
EPSS 0% CVSS 8.6
HIGH POC PATCH This Week

gnark is a zero-knowledge proof system framework. Rated high severity (CVSS 8.6), this vulnerability is no authentication required, low attack complexity. Public exploit code available.

Information Disclosure Jwt Attack Gnark
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM This Month

Improper verification of cryptographic signature in Windows Certificates allows an unauthorized attacker to perform spoofing over a network. Rated medium severity (CVSS 5.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Windows Authentication Bypass Microsoft +14
NVD
EPSS 0% CVSS 7.0
HIGH This Month

A potential vulnerability was reported in the Lenovo 510 FHD and Performance FHD web cameras that could allow an attacker with physical access to write arbitrary firmware updates to the device over a. Rated high severity (CVSS 7.0), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack Lenovo
NVD
EPSS 0% CVSS 8.7
HIGH This Week

A vulnerability has been identified in Mendix SAML (Mendix 10.12 compatible) (All versions < V4.0.3), Mendix SAML (Mendix 10.21 compatible) (All versions < V4.1.2), Mendix SAML (Mendix 9.24. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Information Disclosure Jwt Attack
NVD
EPSS 0% CVSS 9.6
CRITICAL This Week

An improper verification of cryptographic signature in Zscaler's SAML authentication mechanism on the server-side allowed an authentication abuse. Rated critical severity (CVSS 9.6), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD
EPSS 0% CVSS 9.8
CRITICAL PATCH This Week

It was discovered that uscan, a tool to scan/watch upstream sources for new releases of software, included in devscripts (a collection of scripts to make the life of a Debian Package maintainer. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Debian Jwt Attack +2
NVD
EPSS 0% CVSS 9.9
CRITICAL PATCH This Week

samlify is a Node.js library for SAML single sign-on. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure Node.js Jwt Attack +1
NVD GitHub
EPSS 0% CVSS 8.7
HIGH PATCH This Month

OpenPGP.js is a JavaScript implementation of the OpenPGP protocol. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack
NVD GitHub
EPSS 0% CVSS 6.8
MEDIUM This Month

A vulnerability in Cisco IOS Software for Cisco Catalyst 2960X, 2960XR, 2960CX, and 3560CX Series Switches could allow an authenticated, local attacker with privilege level 15 or an unauthenticated. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RCE Apple Cisco +1
NVD
EPSS 0% CVSS 7.5
HIGH This Week

Improper verification of cryptographic signature in Microsoft Azure Functions allows an authorized attacker to execute code over a network. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable. No vendor patch available.

Information Disclosure Microsoft Jwt Attack +1
NVD
EPSS 0% CVSS 2.4
LOW Monitor

Improper Verification of Cryptographic Signature vulnerability in LibreOffice allows PDF Signature Spoofing by Improper Validation. Rated low severity (CVSS 2.4), this vulnerability is low attack complexity. No vendor patch available.

Information Disclosure Jwt Attack Libreoffice
NVD
EPSS 0% CVSS 8.0
HIGH This Week

CarlinKit CPC200-CCPA update.cgi Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated high severity (CVSS 8.0), this vulnerability is low attack complexity. No vendor patch available.

RCE Jwt Attack Autokit
NVD
EPSS 0% CVSS 6.8
MEDIUM This Month

CarlinKit CPC200-CCPA Improper Verification of Cryptographic Signature Code Execution Vulnerability. Rated medium severity (CVSS 6.8), this vulnerability is no authentication required, low attack complexity. No vendor patch available.

RCE Jwt Attack Autokit
NVD
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

NSSCryptoSignBackend.cc in Poppler before 25.04.0 does not verify the adbe.pkcs7.sha1 signatures on documents, resulting in potential signature forgeries. Rated medium severity (CVSS 4.3), this vulnerability is no authentication required, low attack complexity.

Information Disclosure Red Hat Jwt Attack +2
NVD
EPSS 0% CVSS 6.0
MEDIUM This Month

A vulnerability in the web-based management interface of Cisco Secure Network Analytics could allow an authenticated, remote attacker with valid administrative credentials to execute arbitrary. Rated medium severity (CVSS 6.0), this vulnerability is low attack complexity. No vendor patch available.

Information Disclosure Cisco Jwt Attack +1
NVD
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Suricata is a network Intrusion Detection System, Intrusion Prevention System and Network Security Monitoring engine. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Information Disclosure Jwt Attack Suricata +1
NVD GitHub
EPSS 0% CVSS 8.1
HIGH This Month

MSI Center before 2.0.52.0 has Missing PE Signature Validation. Rated high severity (CVSS 8.1), this vulnerability is no authentication required. No vendor patch available.

Information Disclosure Jwt Attack
NVD
EPSS 5% CVSS 8.7
HIGH PATCH This Week

MinIO is a High Performance Object Storage released under GNU Affero General Public License v3.0. Rated high severity (CVSS 8.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Information Disclosure Red Hat Jwt Attack +1
NVD GitHub
EPSS 0% CVSS 4.0
MEDIUM PATCH This Month

The OpenSAML C++ library before 3.3.1 allows forging of signed SAML messages via parameter manipulation (when using SAML bindings that rely on non-XML signatures). Rated medium severity (CVSS 4.0), this vulnerability is remotely exploitable, no authentication required. No vendor patch available.

Information Disclosure Red Hat Jwt Attack +1
NVD
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Node.js Red Hat +1
NVD GitHub
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

xml-crypto is an XML digital signature and encryption library for Node.js. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Authentication Bypass Node.js Red Hat +1
NVD GitHub
EPSS 4% CVSS 9.3
CRITICAL POC PATCH Act Now

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Authentication Bypass Jwt Attack Omniauth Saml +2
NVD GitHub
EPSS 14% CVSS 9.3
CRITICAL POC PATCH THREAT Act Now

ruby-saml provides security assertion markup language (SAML) single sign-on (SSO) for Ruby. Rated critical severity (CVSS 9.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and EPSS exploitation probability 13.8%.

Authentication Bypass Jwt Attack Omniauth Saml +2
NVD GitHub
EPSS 0% CVSS 6.7
MEDIUM This Month

A vulnerability in the boot process of Cisco IOS XR Software could allow an authenticated, local attacker with high privileges to bypass the Secure Boot functionality and load unverified software on. Rated medium severity (CVSS 6.7), this vulnerability is low attack complexity. No vendor patch available.

Authentication Bypass Apple Cisco +2
NVD
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