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Authentication Bypass

auth CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

How It Works

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications. Instead of cracking passwords through brute force, attackers manipulate the authentication process itself to gain unauthorized entry. This typically occurs through one of several pathways: exploiting hardcoded credentials embedded in source code or configuration files, manipulating parameters in authentication requests to skip verification steps, or leveraging broken session management that fails to properly validate user identity.

The attack flow often begins with reconnaissance to identify authentication endpoints and their underlying logic. Attackers may probe for default administrative credentials that were never changed, test whether certain URL paths bypass login requirements entirely, or intercept and modify authentication tokens to escalate privileges. In multi-step authentication processes, flaws in state management can allow attackers to complete only partial verification steps while still gaining full access.

More sophisticated variants exploit single sign-on (SSO) or OAuth implementations where misconfigurations in trust relationships allow attackers to forge authentication assertions. Parameter tampering—such as changing a "role=user" field to "role=admin" in a request—can trick poorly designed systems into granting elevated access without proper verification.

Impact

  • Complete account takeover — attackers gain full control of user accounts, including administrative accounts, without knowing legitimate credentials
  • Unauthorized data access — ability to view, modify, or exfiltrate sensitive information including customer data, financial records, and intellectual property
  • System-wide compromise — admin-level access enables installation of backdoors, modification of security controls, and complete infrastructure takeover
  • Lateral movement — bypassed authentication provides a foothold for moving deeper into networks and accessing additional systems
  • Compliance violations — unauthorized access triggers breach notification requirements and regulatory penalties

Real-World Examples

CrushFTP suffered a critical authentication bypass allowing attackers to access file-sharing functionality without any credentials. The vulnerability enabled direct server-side template injection, leading to remote code execution on affected systems. Attackers actively exploited this in the wild to establish persistent access to enterprise file servers.

Palo Alto's Expedition migration tool contained a flaw permitting attackers to reset administrative credentials without authentication. This allowed complete takeover of the migration environment, potentially exposing network configurations and security policies being transferred between systems.

SolarWinds Web Help Desk (CVE-2024-28987) shipped with hardcoded internal credentials that could not be changed through normal administrative functions. Attackers discovering these credentials gained full administrative access to helpdesk systems containing sensitive organizational information and user data.

Mitigation

  • Implement multi-factor authentication (MFA) — requires attackers to compromise additional verification factors beyond bypassed primary authentication
  • Eliminate hardcoded credentials — use secure credential management systems and rotate all default credentials during deployment
  • Enforce authentication on all endpoints — verify every request requires valid authentication; no "hidden" administrative paths should exist
  • Implement proper session management — use cryptographically secure session tokens, validate on server-side, enforce timeout policies
  • Apply principle of least privilege — limit damage by ensuring even authenticated users only access necessary resources
  • Regular security testing — conduct penetration testing specifically targeting authentication logic and flows

Recent CVEs (32005)

EPSS 0% CVSS 9.4
CRITICAL PATCH Act Now

Unauthenticated privilege escalation in SignalK Server (versions prior to 2.24.0-beta.4) allows remote attackers to inject administrator roles via the /enableSecurity endpoint, granting full administrative control without credentials. Attackers can modify vessel routing data, alter server configurations, and access all restricted endpoints. No public exploit identified at time of analysis, but the critical CVSS 9.4 score reflects the trivial exploit complexity (AV:N/AC:L/PR:N) and high confidentiality/integrity impact to marine vessel control systems.

Privilege Escalation Authentication Bypass Signalk Server
NVD GitHub VulDB
EPSS 0% CVSS 9.8
CRITICAL PATCH Act Now

JWT signature verification bypass in ConvoyPanel 3.9.0-beta through 4.5.0 allows unauthenticated remote attackers to forge authentication tokens and impersonate any user account. The JWTService::decode() method validates only time-based claims while ignoring cryptographic signatures, enabling complete authentication bypass in the SSO flow by crafting tokens with arbitrary user_uuid values. CVSS 9.8 (Critical) with network attack vector, low complexity, and no privileges required. No public exploit identified at time of analysis, though the vulnerability mechanism is straightforward to exploit given the technical details in the GitHub advisory.

Authentication Bypass Panel
NVD GitHub
EPSS 0% CVSS 6.8
MEDIUM PATCH This Month

OWASP Core Rule Set (CRS) versions prior to 3.3.9 and 4.25.0 allow bypass of file upload restrictions through whitespace-padded filenames, enabling upload of dangerous executable file extensions (.php, .phar, .jsp, .jspx) that should be blocked. Remote attackers can exploit this vulnerability to upload malicious files with high confidence due to the simple nature of the bypass technique (inserting spaces before the file extension), potentially leading to remote code execution depending on web application firewall configuration and application behavior.

PHP Authentication Bypass
NVD GitHub VulDB
EPSS 0% CVSS 5.5
MEDIUM POC This Month

Improper access controls in SourceCodester Best Courier Management System 1.0 allow unauthenticated remote attackers to delete users by manipulating the ID parameter in the /ajax.php?action=delete_user endpoint, bypassing authentication requirements. The vulnerability has publicly available exploit code and impacts all versions of the affected software with a CVSS 6.9 score reflecting moderate integrity impact through an easily exploitable network vector.

PHP Authentication Bypass
NVD VulDB GitHub
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Keycloak's SingleUseObjectProvider lacks proper type and namespace isolation, allowing unauthenticated remote attackers with user interaction to delete arbitrary single-use entries and replay consumed action tokens such as password reset links, leading to account compromise. The vulnerability requires user interaction (UI:R) and high attack complexity (AC:H), resulting in a CVSS score of 5.3. No public exploit code or active exploitation has been confirmed at time of analysis.

Authentication Bypass Red Hat
NVD
EPSS 0% CVSS 5.5
MEDIUM POC This Month

Remote authentication bypass in SourceCodester Leave Application System 1.0 allows unauthenticated attackers to access user information via insecure direct object reference (IDOR) in the /index.php?page=manage_user endpoint by manipulating the ID parameter. The vulnerability has a publicly available exploit and CVSS 5.3 (low-moderate confidentiality impact), though actual risk depends on the sensitivity of exposed user data and system context.

Authentication Bypass PHP
NVD VulDB
EPSS 0% CVSS 2.9
LOW PATCH Monitor

Authorization bypass in Cesanta Mongoose up to version 7.20 allows remote, unauthenticated attackers to bypass TLS certificate signature verification in the P-384 public key handler (mg_tls_verify_cert_signature function in mongoose.c), potentially enabling man-in-the-middle attacks or unauthorized access. The attack is highly complex (CVSS AC:H) but publicly disclosed exploit code exists, with vendor-released patch available in version 7.21.

Authentication Bypass Mongoose
NVD VulDB GitHub
EPSS 0% CVSS 7.8
HIGH PATCH This Week

SEPPmail Secure Email Gateway before version 15.0.3 allows attackers to bypass subject sanitization and forge security tags by exploiting Unicode lookalike characters, enabling email spoofing and phishing attacks that evade gateway security controls. This vulnerability affects all versions prior to 15.0.3, impacts organizations relying on SEPPmail for email security, and requires immediate patching. No public exploit code has been identified at the time of analysis.

Authentication Bypass Secure Email Gateway
NVD
EPSS 0% CVSS 7.7
HIGH PATCH This Week

SEPPmail Secure Email Gateway before version 15.0.3 allows remote attackers to bypass subject line sanitization controls and forge authentication tags such as [signed OK], enabling email spoofing attacks that could deceive recipients into trusting fraudulent or malicious messages. The vulnerability affects all versions prior to 15.0.3 and has been publicly disclosed by NCSC.ch; no public exploit code or active exploitation has been independently confirmed at time of analysis.

Authentication Bypass Secure Email Gateway
NVD
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

SEPPmail Secure Email Gateway before version 15.0.3 permits attackers to craft malicious password-tags that circumvent subject line sanitization controls, potentially enabling unauthorized email manipulation or information disclosure. The vulnerability affects all versions prior to 15.0.3 and was reported by NCSC.ch; no CVSS score or public exploit code has been published at the time of analysis.

Authentication Bypass Secure Email Gateway
NVD
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

SEPPmail Secure Email Gateway before version 15.0.3 allows unauthenticated external users to modify GINA webdomain metadata and bypass per-domain restrictions, enabling attackers to circumvent email security controls across isolated security domains. NCSC.ch reported this authentication bypass vulnerability affecting all versions prior to 15.0.3. The ability to modify domain-level metadata across organizational security boundaries represents a direct compromise of the gateway's core function to enforce per-domain policies.

Authentication Bypass Secure Email Gateway
NVD
EPSS 0% CVSS 6.3
MEDIUM PATCH This Month

SEPPmail Secure Email Gateway before version 15.0.3 allows authenticated attackers with access to a victim's GINA account to bypass secondary password verification and directly access protected emails, circumventing a multi-factor authentication mechanism intended to protect sensitive correspondence.

Authentication Bypass Secure Email Gateway
NVD
EPSS 0% CVSS 5.5
MEDIUM POC This Month

Missing authentication in vanna-ai vanna Chat API endpoint (/api/vanna/v2/) allows unauthenticated remote attackers to perform unauthorized operations with low-complexity attacks. Affects vanna-ai vanna versions up to 2.0.2. Publicly available exploit code exists (GitHub POC published), increasing immediate exploitation risk. CVSS 7.3 reflects network-accessible attack vector with no authentication required and impacts to confidentiality, integrity, and availability. Vendor did not respond to early disclosure notification.

Authentication Bypass Vanna
NVD VulDB GitHub
EPSS 0% CVSS 4.0
MEDIUM This Month

HCL BigFix Platform allows local attackers to bypass authentication and access sensitive application areas without credentials, affecting confidentiality of data. The vulnerability requires local access but no privileges or user interaction, and is classified as a moderate-risk authentication bypass (CVSS 4.0) with limited technical complexity. Patches are available through HCL vendor advisories.

Authentication Bypass Bigfix Platform
NVD VulDB
EPSS 0% CVSS 7.1
HIGH PATCH This Week

Session fixation in listmonk v6.0.0 allows authenticated sessions to persist after password reset or password change, enabling attackers with stolen session cookies to maintain account access despite credential recovery by the victim. Authenticated remote attackers (PR:L) can exploit this to retain high confidentiality impact access. No public exploit code identified at time of analysis, though the vulnerability is trivially reproducible per the detailed proof-of-concept. EPSS data not available; vulnerability confirmed in production release v6.0.0 via GitHub Security Advisory.

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

Authentication bypass in PraisonAI MCP server (Python package praisonai) allows remote, unauthenticated attackers to execute arbitrary agents, workflows, and file operations with zero authentication. The OAuthManager.validate_token() method incorrectly returns True for any token when its internal token store is empty (default state), treating all HTTP requests with arbitrary Bearer tokens as authenticated. This grants full access to 50+ registered tools including praisonai.agent.run, praisonai.w

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

Missing authentication in PraisonAI Gateway 4.5.87 allows remote unauthenticated attackers to hijack AI agent infrastructure via exposed WebSocket endpoints and topology enumeration. The `/ws` WebSocket endpoint and `/info` REST endpoint accept connections without token validation, enabling arbitrary message injection to registered agents and their tool sets. While the GatewayConfig includes an auth_token field, the implementation never enforces it. Publicly available exploit code exists with concrete proof-of-concept demonstrating unauthenticated connection and agent enumeration. EPSS data not available for this recent CVE, but the network-accessible attack vector (AV:N), low complexity (AC:L), and zero authentication requirement (PR:N) combined with working POC code create immediate risk for exposed instances.

Authentication Bypass Python
NVD GitHub
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Session fixation vulnerability in CI4MS (CodeIgniter 4 CMS) allows deactivated user accounts to maintain indefinite access through active sessions. Authenticated attackers whose accounts have been administratively disabled retain full high-privilege access (confidentiality, integrity, availability impact) until manual logout, bypassing intended access controls. Affects all versions prior to 0.31.0.0. EPSS data not available; no public exploit identified at time of analysis. CVSS 8.8 (High) reflects significant post-compromise persistence risk in enterprise CMS deployments with role-based access control.

Authentication Bypass Ci4ms
NVD GitHub
EPSS 0% CVSS 8.8
HIGH PATCH This Week

Session persistence in CI4MS (CodeIgniter 4 CMS skeleton) allows deleted user accounts to retain full system access indefinitely through active sessions until manual logout. Affects all versions prior to 0.31.0.0. The authentication bypass enables unauthorized access to protected resources with high confidentiality, integrity, and availability impact across both vulnerable and subsequent systems (CVSS 10.0 Critical). No public exploit identified at time of analysis, though the vulnerability mechanism is straightforward to abuse by maintaining an active session before account deletion.

Authentication Bypass Ci4ms
NVD GitHub
EPSS 0% CVSS 7.6
HIGH PATCH This Week

DNS rebinding attacks can bypass same-origin policy in Model Context Protocol (MCP) Go SDK versions prior to 1.4.0, enabling malicious websites to send unauthorized requests to localhost HTTP servers. Affects servers using StreamableHTTPHandler or SSEHandler when run without authentication on localhost. No public exploit identified at time of analysis, though the attack technique (DNS rebinding) is well-documented. CVSS scoring unavailable, but real-world risk is constrained to non-recommended configurations lacking authentication.

Authentication Bypass
NVD GitHub VulDB
EPSS 0% CVSS 8.1
HIGH This Week

Authentication bypass in goshs (Go Simple HTTP Server) allows unauthenticated attackers to execute arbitrary system commands via WebSocket connections by exploiting a logic flaw in the BasicAuthMiddleware's share token validation. The middleware processes share tokens before credential checks, and attackers can combine a legitimate share token (intended for single-file downloads) with WebSocket query parameters to gain full CLI access. Confirmed actively exploited (CISA KEV). Public proof-of-concept code demonstrates remote command execution retrieving /etc/passwd. EPSS score indicates elevated exploitation probability given the simplicity of the attack chain.

Authentication Bypass Python
NVD GitHub
EPSS 0% CVSS 8.1
HIGH PATCH This Week

Authentication bypass in IBM Verify Identity Access and IBM Security Verify Access (versions 10.0-10.0.9.1 and 11.0-11.0.2, both container and non-container deployments) allows remote attackers to gain unauthorized access under specific high-load conditions without authentication. The vulnerability carries an EPSS score indicating moderate exploitation probability, with vendor patch available but no confirmed active exploitation or public proof-of-concept at time of analysis. Attack complexity is rated high (AC:H), suggesting exploitation requires specific timing or environmental conditions related to load stress.

IBM Authentication Bypass
NVD
EPSS 0% CVSS 5.5
MEDIUM POC This Month

Improper access controls in D-Link network-attached storage devices (DNS-120 through DNS-1550-04, firmware versions up to 20260205) allow remote unauthenticated attackers to manipulate disk management functions via the /cgi-bin/dsk_mgr.cgi endpoint, resulting in availability impact. Publicly available exploit code exists and the vulnerability has moderate real-world exploitability (CVSS 5.5, EPSS probability indicated by E:P vector), requiring no authentication or user interaction for remote attack.

D-Link Authentication Bypass
NVD VulDB GitHub
EPSS 0% CVSS 9.1
CRITICAL PATCH Act Now

Account takeover via OAuth email auto-linking affects Reviactyl game server management panel versions 26.2.0-beta.1 through 26.2.0-beta.4, allowing unauthenticated remote attackers to gain full access to victim accounts by registering social OAuth accounts (Google, GitHub, Discord) with matching email addresses. The CVSS 9.1 (Critical) score reflects network-based exploitation requiring no authentication, low complexity, and high confidentiality/integrity impact. No public exploit identified at time of analysis, though the vulnerability mechanism is straightforward and publicly documented in GitHub advisory GHSA-8mcf-rp68-xhfg. Vendor-released patch: version 26.2.0-beta.5.

Authentication Bypass Google
NVD GitHub
EPSS 0% CVSS 7.7
HIGH PATCH This Week

Authentication bypass via OAuth token race condition in tinyauth allows concurrent attackers to hijack user sessions and gain unauthorized access to victim accounts. The vulnerability affects tinyauth v5.0.4 and earlier versions where singleton OAuth service instances share mutable PKCE verifier and access token fields across all concurrent requests. When two users authenticate simultaneously with the same OAuth provider (GitHub, Google, or generic OAuth), the second request overwrites the first

Race Condition Authentication Bypass Microsoft
NVD GitHub
EPSS 0% CVSS 2.3
LOW PATCH Monitor

Temporal Server versions 1.29.0 through 1.30.2 allow a writer role user in one namespace to manipulate workflows and activities in arbitrary victim namespaces on the same cluster via namespace name spoofing in batch activity operations. The vulnerability stems from improper namespace validation introduced in v1.29.0, where batch activity code accepts attacker-controlled namespace names instead of enforcing the worker's bound namespace. Exploitation requires knowledge of target workflow IDs, cross-namespace authorization enabled in the server configuration (such as internal-frontend service deployment), and shared cluster placement. This is confirmed actively exploited (CISA KEV status pending confirmation); exploitation is difficult due to high attack complexity and precondition requirements, but enables unauthorized workflow signal, deletion, and reset operations.

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

Unauthorized access to password-protected PDFs in PdfDing versions prior to 1.7.0 allows unauthenticated remote attackers to bypass shared-link password verification and retrieve confidential documents via direct file-serving endpoint calls. The vulnerability (CWE-863: Incorrect Authorization) has CVSS 7.5 (High) severity with network attack vector requiring no privileges or user interaction. EPSS data not available; no evidence of active exploitation (not in CISA KEV). Publicly available exploit code exists via GitHub commit demonstrating the bypass mechanism. Vendor-released patch available in version 1.7.0.

Authentication Bypass Pdfding
NVD GitHub
EPSS 0% CVSS 7.7
HIGH PATCH This Week

Broken access control in Open WebUI allows authenticated users to access tool values across tenant boundaries, exposing sensitive information from other users' AI tool configurations. The vulnerability affects self-hosted Open WebUI instances prior to version 0.8.11. With CVSS 7.7 (High) and network-accessible attack vector requiring only low-privilege authentication, this represents a significant confidentiality breach in multi-tenant deployments. No public exploit identified at time of analysis, with EPSS data not yet available for this recent CVE.

Authentication Bypass Open Webui
NVD GitHub
EPSS 0% CVSS 8.3
HIGH This Week

Authentication bypass in CronMaster versions prior to 2.2.0 allows adjacent network attackers to gain unauthorized administrative access without credentials. When session validation requests fail, the middleware incorrectly treats invalid session cookies as authenticated, enabling execution of privileged Next.js Server Actions and access to protected administrative pages. EPSS data not available for this recent CVE; no public exploit identified at time of analysis, though exploitation complexity is low once network access is achieved.

Authentication Bypass Cronmaster
NVD GitHub VulDB
EPSS 0% CVSS 8.0
HIGH This Week

Improper authorization in Cisco EPNM's REST API allows authenticated low-privilege attackers to access active user session data, including administrative credentials, enabling full device compromise. The vulnerability (CWE-862: Missing Authorization) affects the web management interface with CVSS 8.0 severity. Authentication is required (PR:L) but exploitation complexity is low once authenticated. No public exploit identified at time of analysis, with EPSS data unavailable for this 2026-dated CVE identifier.

Cisco Authentication Bypass Cisco Evolved Programmable Network Manager Epnm
NVD VulDB
EPSS 0% CVSS 9.8
CRITICAL POC Act Now

Authentication bypass in Cisco Integrated Management Controller (IMC) allows unauthenticated remote attackers to gain administrative access by exploiting improper password change request handling. Affected products include Cisco Enterprise NFV Infrastructure Software, Unified Computing System (Standalone), and UCS E-Series Software. The attacker can alter any user's password, including Admin accounts, and take full control of the management interface. CVSS 9.8 (Critical) with network-accessible attack vector requiring no privileges or user interaction. No public exploit identified at time of analysis, though EPSS data not available for comprehensive risk assessment.

Cisco Authentication Bypass
NVD VulDB GitHub
EPSS 0% CVSS 5.0
MEDIUM This Month

Improper access control in Devolutions Server 2026.1.6 through 2026.1.11 allows authenticated attackers to delete their own MFA factors via crafted API requests, reducing account protection to password-only authentication. This vulnerability enables account security degradation without proper authorization checks, potentially compromising accounts that rely on multi-factor authentication as a secondary defense.

Authentication Bypass Server
NVD VulDB
EPSS 0% CVSS 5.0
MEDIUM This Month

Improper access control in Devolutions Server 2026.1.6 through 2026.1.11 allows authenticated users to bypass administrator-enforced MFA restrictions and remove their own multi-factor authentication via a crafted request. This authentication bypass undermines security policies designed to enforce MFA compliance, enabling threat actors with valid credentials to disable a critical security control and potentially maintain persistent access without secondary authentication verification. No public exploit code or active exploitation has been confirmed at time of analysis.

Authentication Bypass Server
NVD VulDB
EPSS 0% CVSS 8.2
HIGH This Week

Devolutions Server 2026.1.11 and earlier allows authenticated remote attackers to bypass two-factor authentication by reusing a partially authenticated session token, enabling unauthorized account access without completing the second authentication factor. The vulnerability affects all versions up to and including 2026.1.11, with no CVSS score or public exploit confirmation available at analysis time.

Authentication Bypass Server
NVD VulDB
EPSS 0% CVSS 8.2
HIGH This Week

Devolutions Server versions 2026.1.11 and earlier allow authenticated remote attackers to bypass multi-factor authentication through improper validation of OAuth login requests, enabling account takeover without second-factor verification. CISA KEV status and exploit availability not confirmed at time of analysis.

Authentication Bypass Server
NVD VulDB
EPSS 0% CVSS 5.4
MEDIUM This Month

Improper session code validation in Devolutions Server 2026.1.11 and earlier allows authenticated users to escalate privileges and impersonate other users, including administrators, by reusing session codes from external OAuth authentication flows. This authentication bypass affects all versions up to and including 2026.1.11 and requires an attacker to have valid credentials to exploit the vulnerability. No public exploit code or active exploitation has been confirmed at the time of analysis.

Authentication Bypass Server
NVD VulDB
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

OpenViking versions 0.2.5 through 0.2.13 contain a missing authentication vulnerability in the bot proxy router that allows remote unauthenticated attackers to access protected bot proxy functionality via POST requests to /bot/v1/chat and /bot/v1/chat/stream endpoints, enabling direct interaction with the upstream bot backend without valid credentials. The vulnerability has a moderate CVSS score of 6.9 due to network accessibility and low confidentiality impact, with public fix availability as of version 0.2.14 reducing immediate risk for patched deployments.

Authentication Bypass Openviking
NVD GitHub VulDB
EPSS 0% CVSS 8.6
HIGH PATCH This Week

Sandbox escape in ByteDance Deer-Flow (pre-commit 92c7a20) enables remote attackers to execute arbitrary commands on the host system by exploiting incomplete shell semantics validation in bash tool handling. Attackers bypass regex-based input filters using directory traversal and relative paths to break sandbox isolation, read/modify host files, and invoke subprocesses with shell interpretation. Authentication requirements not confirmed from available data. No public exploit identified at time of analysis, though detailed technical advisory exists.

Authentication Bypass Deerflow
NVD GitHub VulDB
EPSS 0% CVSS 6.5
MEDIUM POC This Month

SourceCodester Loan Management System v1.0 allows authenticated administrators to submit negative penalty rates for loan overdue payments by bypassing client-side validation through direct HTTP POST manipulation, enabling financial fraud through reversed penalty calculations that benefit borrowers instead of lenders. The vulnerability requires authenticated access but no CVSS score, EPSS probability, or formal patch status is available; however, publicly available exploit code confirms the vulnerability's technical feasibility.

Authentication Bypass Loan Management System
NVD GitHub
EPSS 0% CVSS 6.4
MEDIUM This Month

Hardcoded cryptographic key in Metronik MEPIS RM's Mx.Web.ComponentModel.dll component allows privileged database users to decrypt stored domain passwords and gain unauthorized access to ICS/OT environments. The vulnerability affects all versions of MEPIS RM where password storage is enabled; exploitation requires high-level privileges to access the application database, and no public exploit code has been identified at time of analysis.

Authentication Bypass Mepis Rm
NVD VulDB
EPSS 0% CVSS 2.1
LOW Monitor

Unrestricted file upload in Harvard IQSS Dataverse versions up to 6.8 allows authenticated users to bypass theme customization controls via manipulation of the uploadLogo parameter in /ThemeAndWidgets.xhtml, enabling arbitrary file upload with low confidentiality, integrity, and availability impact. The vulnerability is publicly exploitable with proof-of-concept code available; CVSS 5.3 reflects the authenticated attack vector and limited scope, though the ease of exploitation (Attack Complexity Low, Exploitation proven) combined with public POC increases practical risk. Vendor released patched version 6.10 and responded swiftly to early disclosure.

File Upload Authentication Bypass
NVD GitHub VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

Linux kernel KVM x86/mmu module improperly validates shadow page table entries (SPTEs) in indirect MMUs, allowing host userspace writes to bypass KVM's write-tracking detection and corrupt shadow paging state. The vulnerability affects KVM implementations on x86 systems with nested or indirect MMU configurations where writes originating outside KVM's scope (e.g., from host userspace via memory access) are not detected, potentially leading to memory corruption or VM escape. No CVSS score, EPSS data, or KEV status is available; this appears to be an internal kernel consistency issue addressed via upstream patch rather than a directly exploitable security boundary.

Linux Authentication Bypass Red Hat
NVD VulDB
EPSS 0% CVSS 5.5
MEDIUM PATCH This Month

Linux kernel KVM x86/MMU incorrectly installs emulated MMIO shadow page table entries (SPTEs) without first zapping existing shadow-present SPTEs when host userspace modifies guest page tables outside KVM's scope, causing kernel warnings and potential memory consistency issues. The vulnerability affects KVM on x86 systems running vulnerable kernel versions and can be triggered by a local attacker with ability to manipulate guest memory or run guest VMs, though the practical impact beyond kernel instability remains limited.

Linux Authentication Bypass Memory Corruption +1
NVD VulDB
EPSS 0% CVSS 6.3
MEDIUM This Month

Joomla CMS fails to enforce authenticated user checks on the AJAX component in the administrative area, allowing potential authentication bypass and unauthorized access to sensitive functionality. Third-party developers expecting default access controls may expose administrative features to unauthenticated or unauthorized users. No CVSS score or public exploit code has been identified, but the vulnerability affects all Joomla CMS versions and requires immediate review of custom AJAX implementations that rely on implicit authentication enforcement.

Authentication Bypass Joomla Cms
NVD
EPSS 0% CVSS 8.6
HIGH POC This Week

Improper access control in Joomla! CMS webservice endpoints allows unauthorized attackers to bypass authentication and access protected API functionality without valid credentials. Joomla! CMS versions prior to the patched release are affected. The vulnerability stems from inadequate validation of user permissions before processing webservice requests, enabling remote unauthenticated attackers to interact with restricted endpoints that should require administrative or elevated privileges.

Authentication Bypass Joomla Cms
NVD GitHub
EPSS 0% CVSS 9.1
CRITICAL PATCH Act Now

Order Notification for WooCommerce WordPress plugin versions before 3.6.3 disable WooCommerce's authentication and permission checks, allowing unauthenticated remote attackers to read and modify all store data including products, coupons, orders, and customer information. This critical authorization bypass affects all WordPress installations using the vulnerable plugin without version restriction, and no public exploit code availability or active exploitation status has been confirmed at time of analysis.

WordPress Authentication Bypass
NVD WPScan
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

Information disclosure in ANGLE (graphics abstraction layer) within Google Chrome prior to version 146.0.7680.178 enables remote attackers to leak cross-origin data through crafted HTML pages. The vulnerability affects all Chrome versions before the patched release and requires only network access and user interaction (visiting a malicious page), posing a moderate real-world risk to users who may inadvertently access attacker-controlled content.

Google Authentication Bypass Debian +3
NVD VulDB
EPSS 0% CVSS 7.1
HIGH This Week

Insecure direct object reference in Foxit eSign's signing invitation acceptance process allows authenticated attackers to forge document signatures by manipulating object identifiers. Attackers with low-level privileges can access high-sensitivity resources and modify signing workflows without proper authorization, potentially compromising document integrity and authenticity in electronic signature workflows. EPSS score of 0.03% (8th percentile) indicates low observed exploitation probability, with no public exploit code or active exploitation confirmed at time of analysis.

Authentication Bypass Na1 Foxitesign Foxit Com
NVD
EPSS 0% CVSS 4.3
MEDIUM This Month

Authenticated attackers with Contributor-level access or above can extract all form submissions from the Database for Contact Form 7, WPforms, Elementor Forms WordPress plugin (versions up to 1.4.9) via a missing capability check in the entries_shortcode() function, exposing names, emails, phone numbers, and other sensitive form data. The vulnerability requires existing WordPress user credentials but no administrative privileges, making it accessible to low-privileged users who may be granted contributor roles during normal site operations. No public exploit code or active exploitation has been confirmed at the time of analysis.

WordPress Authentication Bypass Elementor
NVD
EPSS 0% CVSS 9.3
CRITICAL PATCH Act Now

Authentication bypass in XenForo versions prior to 2.3.7 compromises passkey-based authentication, allowing remote unauthenticated attackers to bypass security controls protecting passkey-enabled user accounts. No public exploit identified at time of analysis, though EPSS data not available. The vulnerability affects a critical authentication mechanism (WebAuthn/passkeys), representing a high-severity threat to forum platforms relying on this modern authentication method.

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

OAuth2 scope enforcement vulnerability in XenForo 2.3.x (prior to 2.3.5) allows authenticated client applications to request and obtain unauthorized scopes, escalating access beyond intended authorization levels. This authentication bypass flaw (CWE-863) enables malicious OAuth2 clients to gain elevated privileges to user data and platform functions. CVSS 8.7 (High) reflects the network-accessible attack vector with low complexity, though requires low-level privileges (authenticated OAuth client). No public exploit identified at time of analysis, with EPSS data unavailable for recent CVE.

Authentication Bypass Xenforo
NVD
EPSS 0% CVSS 5.9
MEDIUM This Month

Unauthenticated access to diagnostic endpoints in Sage DPW 2025_06_004 Database Monitor feature discloses sensitive information including password hashes and database table names when non-default configuration is enabled. The vulnerability affects only installations with this feature explicitly enabled (disabled by default); Sage DPW Cloud is not vulnerable. This configuration was forcibly disabled in version 2025_06_003, indicating a prior history of this issue. EPSS score of 5.9 reflects moderate exploitation probability despite unauthenticated network accessibility.

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

Mbed TLS versions 3.5.0 through 4.0.0 allow client impersonation during TLS 1.3 session resumption, enabling an attacker to assume the identity of a legitimate client when reestablishing a previously negotiated session. The vulnerability affects the session resumption mechanism in TLS 1.3 and permits information disclosure; no CVSS score or exploit status data is currently available from public sources.

Authentication Bypass
NVD VulDB
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

Flask-HTTPAuth versions prior to 4.8.1 allow authentication bypass when applications store empty string tokens in their user database, enabling unauthenticated attackers to authenticate as any user with an empty token set by submitting requests without a token or with an empty token value. This affects only token-based authentication mechanisms that verify tokens via database lookup rather than cryptographic means (e.g., JWTs). CVSS score 6.5 reflects moderate integrity impact with low computational attack complexity, and no public exploit code has been identified at the time of analysis.

Python Authentication Bypass
NVD GitHub VulDB
EPSS 0% CVSS 10.0
CRITICAL PATCH Act Now

Server-Side Request Forgery (SSRF) in FastMCP's OpenAPIProvider allows authenticated attackers to access arbitrary backend endpoints through path traversal injection in OpenAPI path parameters. The vulnerability arises from improper URL encoding in the RequestDirector._build_url() method, enabling attackers to escape intended API prefixes using '../' sequences and reach internal administrative or sensitive endpoints while inheriting the MCP provider's authentication context. This affects the fastmcp Python package and enables privilege escalation beyond the OpenAPI specification's intended API surface. No public exploit identified at time of analysis, though detailed proof-of-concept code exists in the GitHub advisory demonstrating traversal to /admin endpoints.

SSRF Path Traversal Authentication Bypass +2
NVD GitHub VulDB
EPSS 0% CVSS 8.2
HIGH PATCH This Week

FastMCP OAuthProxy allows authentication bypass through a Confused Deputy attack, enabling attackers to hijack victim OAuth sessions and gain unauthorized access to MCP servers. When victims who previously authorized a legitimate MCP client are tricked into opening a malicious authorization URL, the OAuthProxy fails to validate browser-bound consent, redirecting valid authorization codes to attacker-controlled clients. This affects the GitHubProvider integration and potentially all OAuth providers that skip consent prompts for previously authorized applications. No public exploit identified at time of analysis, though detailed reproduction steps are publicly documented in the GitHub security advisory.

Authentication Bypass Microsoft
NVD GitHub
EPSS 0% CVSS 7.5
HIGH POC PATCH This Week

Unauthenticated information disclosure in SiYuan personal knowledge management system versions before 3.6.2 allows remote attackers to retrieve confidential content from password-protected documents via the publish service's bookmark API endpoint. The vulnerability bypasses document-level access controls by treating nil authentication contexts as authorized during bookmark filtering, exposing any bookmarked blocks without password verification. CVSS 7.5 (High) with network-based exploitation requiring no privileges or user interaction; no public exploit identified at time of analysis, though the security advisory provides detailed technical disclosure.

Authentication Bypass Siyuan
NVD GitHub
EPSS 0% CVSS 2.1
LOW POC Monitor

Improper access controls in D-Link DNS and DNR network-attached storage devices allow unauthenticated remote attackers on adjacent networks to access IPv6 configuration functions via the cgi_get_ipv6 function in /cgi-bin/network_mgr.cgi, potentially disclosing sensitive network configuration information. The vulnerability affects multiple D-Link models up to firmware version 20260205, publicly available exploit code exists, and the attack requires only network adjacency with low complexity.

D-Link Authentication Bypass
NVD VulDB GitHub
EPSS 0% CVSS 4.3
MEDIUM PATCH This Month

WWBN AVideo versions 26.0 and prior allow authenticated uploaders to bypass content moderation by directly setting video status to active via an unvalidated overrideStatus parameter, circumventing admin-controlled review workflows. The vulnerability affects any user with upload permissions and has a CVSS score of 4.3 (low-to-moderate severity) with no public exploit code identified at time of analysis.

Authentication Bypass Avideo
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

Authenticated users in WWBN AVideo 26.0 and prior can cancel arbitrary Stripe subscriptions through an exposed test.php debug endpoint in the StripeYPT plugin, exploiting a logic error in the retrieveSubscriptions() method that performs cancellation instead of retrieval. The vulnerability requires valid login credentials but allows any authenticated user-not just administrators-to trigger subscription cancellations, causing integrity violations to payment operations. No public exploit code or active exploitation has been reported at time of analysis, and vendor patches are not yet available.

PHP Authentication Bypass
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

Unauthenticated remote attackers can bypass CLI-only access controls in WWBN AVideo versions 26.0 and prior via a PHP operator precedence bug in install/deleteSystemdPrivate.php, allowing HTTP access to delete server temp directory files and disclose their contents without authentication. The vulnerability stems from a logic error where !php_sapi_name() === 'cli' evaluates incorrectly due to operator binding precedence, causing the access guard to fail entirely. No public exploit code or active exploitation has been reported at the time of this analysis.

PHP Authentication Bypass
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

WWBN AVideo 26.0 and prior exposes sensitive user data through 21 unauthenticated API endpoints via the CreatePlugin template generator. The list.json.php template lacks authentication checks present in its companion add.json.php and delete.json.php templates, allowing remote attackers to enumerate and retrieve user PII, payment logs, IP addresses, user agents, and internal system records without authentication. No vendor patch exists at time of analysis.

Authentication Bypass Information Disclosure PHP
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Unauthenticated attackers can remotely terminate any active live stream in WWBN AVideo 26.0 and prior by sending crafted POST requests to the on_publish_done.php endpoint in the Live plugin. The vulnerability combines two weaknesses: an unauthenticated stats.json.php endpoint that exposes active stream keys, and the on_publish_done.php RTMP callback handler that processes stream termination requests without authentication or authorization checks. This enables complete denial-of-service against all platform live streaming functionality. CVSS 7.5 (High) with network attack vector, low complexity, and no privileges required. No vendor-released patch identified at time of analysis; EPSS data not available.

PHP Authentication Bypass
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM This Month

Information disclosure in WWBN AVideo versions 26.0 and prior allows authenticated users to enumerate and dump the complete user database including personal information and wallet balances via the /plugin/YPTWallet/view/users.json.php endpoint. The vulnerability stems from inadequate authorization checks that verify user login status but fail to enforce administrator-only access, enabling any registered account holder to retrieve sensitive data belonging to all platform users. No public exploit code or active exploitation has been confirmed at time of analysis, and vendor patches are not yet available.

Authentication Bypass PHP
NVD GitHub
EPSS 0% CVSS 7.5
HIGH PATCH This Week

Unauthenticated remote access to restricted documents in Admidio 5.0.0-5.0.7 Docker deployments allows disclosure of role-protected files. The Docker image's Apache configuration disables .htaccess processing (AllowOverride None), bypassing intended access controls on uploaded documents. Attackers can directly retrieve files via HTTP without authentication using paths disclosed in upload response JSON. CVSS 7.5 (High) with network-based attack vector and no authentication required. No public exploit identified at time of analysis, though exploitation is straightforward given the configuration flaw.

Apache Docker Authentication Bypass
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

PdfDing prior to version 1.7.1 permits authenticated users to bypass access controls on shared PDF documents by accessing content after expiration, view limits, or soft-deletion due to incomplete validation in the check_shared_access_allowed() function. The Serve and Download endpoints rely solely on session existence checks without verifying SharedPdf.inactive or SharedPdf.deleted flags, allowing previously-authorized users to retrieve sensitive content that should no longer be accessible. This authentication bypass affects all versions before 1.7.1 and requires valid authentication credentials to exploit.

Authentication Bypass Pdfding
NVD GitHub
EPSS 0% CVSS 9.3
CRITICAL Emergency

Unauthenticated remote code execution in PX4 Autopilot via MAVLink protocol allows network attackers to execute arbitrary commands through SERIAL_CONTROL messages when message signing is disabled. The MAVLink 2.0 protocol in PX4 accepts unsigned messages by default, enabling any party with network access to the MAVLink interface to send interactive shell commands without cryptographic authentication. EPSS data not provided; no KEV status confirmed; reported by ICS-CERT indicating potential operational technology impact.

Authentication Bypass Autopilot
NVD GitHub
EPSS 0% CVSS 8.2
HIGH PATCH This Week

Parse Server versions prior to 8.6.71 and 9.7.1-alpha.1 allow HTTP Range requests to bypass the afterFind trigger and its validators when downloading files from streaming-capable storage adapters like GridFS, enabling unauthorized access to protected files that should be restricted by authentication or authorization logic. This authentication bypass affects all deployments using affected versions with file protection policies enforced via afterFind triggers.

Node.js Authentication Bypass
NVD GitHub
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

Prototype pollution in Lodash 4.17.23 and earlier allows unauthenticated remote attackers to delete properties from built-in prototypes (Object.prototype, Number.prototype, String.prototype) via array-wrapped path segments in _.unset and _.omit functions, bypassing the incomplete fix for CVE-2025-13465. The vulnerability has a CVSS score of 6.5 with low integrity and availability impact; no public exploit code or active exploitation has been confirmed at time of analysis.

Prototype Pollution Authentication Bypass Red Hat
NVD GitHub VulDB
EPSS 0% CVSS 9.3
CRITICAL Emergency

Anritsu MS27100A/MS27101A/MS27102A/MS27103A Remote Spectrum Monitors contain a design-level authentication bypass allowing unauthenticated remote attackers to fully access and manipulate the management interface. This is not a configuration weakness but an inherent architectural flaw (CWE-306: Missing Authentication) with CVSS 9.3 critical severity. No public exploit identified at time of analysis, but trivial exploitation is expected given the complete absence of authentication mechanisms. ICS-CERT advisory confirms the vulnerability affects operational technology environments.

Authentication Bypass Remote Spectrum Monitor Ms27100A Remote Spectrum Monitor Ms27101A +2
NVD
EPSS 0% CVSS 5.1
MEDIUM PATCH This Month

Discourse versions 2026.1.0-2026.1.2, 2026.2.0-2026.2.1, and 2026.3.0-beta allow authenticated moderators to bypass category permission controls and retrieve post content, topic titles, and usernames from categories they lack authorization to access via a sentiment analytics endpoint. Patches are available (2026.1.3, 2026.2.2, 2026.3.0); no public exploit code or active exploitation has been identified.

Authentication Bypass Discourse
NVD GitHub VulDB
EPSS 0% CVSS 6.3
MEDIUM PATCH This Month

Discourse versions 2026.1.0 through 2026.1.2, 2026.2.0 through 2026.2.1, and 2026.3.0-beta retain unauthorized poll interaction capabilities for users who have lost access to private topics, allowing them to vote on and toggle poll status despite removal from category group membership. While no topic content is exposed, the vulnerability permits state modification in topics to which access should have been revoked, violating the intended access control model. Patched versions 2026.1.3, 2026.2.2, and 2026.3.0 are available, and no public exploit code has been identified.

Authentication Bypass Discourse
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Category group moderators in Discourse versions 2026.1.0-2026.1.2, 2026.2.0-2026.2.1, and 2026.3.0-pre can perform privileged actions (such as topic moderation) on content within private categories to which they lack read access, bypassing intended access controls. This authenticated privilege escalation affects self-hosted and managed Discourse instances and has been resolved in versions 2026.1.3, 2026.2.2, and 2026.3.0+. No public exploit code or active exploitation has been reported at this time.

Authentication Bypass Discourse
NVD GitHub
EPSS 0% CVSS 8.1
HIGH PATCH This Week

Authorization bypass in SciTokens C++ library (versions prior to 1.4.1) allows authenticated attackers to access unauthorized filesystem paths via flawed scope validation. The library's path-prefix matching does not enforce path-segment boundaries, enabling a token scoped to '/data/project1' to incorrectly authorize access to '/data/project10' or '/data/project1-backup'. CVSS 8.1 (High) reflects the significant confidentiality and integrity impact, though exploitation requires low-privilege authenticated access (PR:L). No public exploit identified at time of analysis, with EPSS data not available for recent CVE. Vendor-released patch available in version 1.4.1.

Authentication Bypass Suse
NVD GitHub
EPSS 0% CVSS 5.9
MEDIUM PATCH This Month

Unauthenticated attackers can hijack all active Sliver C2 sessions and beacons through a single malicious link clicked by an operator, gaining immediate silent control to exfiltrate collected intelligence or destroy compromised infrastructure, prior to version 1.7.4. The vulnerability exploits browser-based interaction with the custom Wireguard netstack, bypassing authentication entirely via a user-interaction attack vector. This is a critical supply-chain risk for red teams and penetration testers relying on Sliver for command-and-control operations.

Authentication Bypass Sliver
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Parse Server versions prior to 8.6.70 and 9.7.0-alpha.18 allow authenticated users with find class-level permissions to bypass protectedFields restrictions on LiveQuery subscriptions by submitting array-like objects with numeric keys instead of proper arrays in $or, $and, or $nor operators. This enables information disclosure through a binary oracle attack that reveals whether protected fields match attacker-supplied values. The vulnerability requires prior authentication and find-level access but no user interaction, affecting all deployments of vulnerable Parse Server versions.

Node.js Authentication Bypass Memory Corruption +1
NVD GitHub
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Authenticated users in Parse Server prior to versions 8.6.69 and 9.7.0-alpha.14 can bypass immutability protections on session fields by submitting null values in PUT requests to the session update endpoint, allowing indefinite session validity and circumventing configured session expiration policies. The vulnerability requires valid authentication credentials to exploit and has been patched in the specified versions.

Node.js Authentication Bypass
NVD GitHub
EPSS 0% CVSS 6.8
MEDIUM This Month

Search Guard FLX versions 3.0.0 through 4.0.1 allow authenticated users with insufficient privileges to execute unauthorized management operations on data streams due to improper access control, enabling privilege escalation with high confidentiality and integrity impact. The CVSS score of 6.8 reflects network accessibility and moderate attack complexity, with active data stream manipulation possible after authentication. No public exploit code or confirmed active exploitation has been identified at this time.

Authentication Bypass Search Guard Flx
NVD
EPSS 0% CVSS 9.1
CRITICAL PATCH Act Now

Parse Server Cloud Function validator bypass allows unauthenticated remote attackers to execute protected server-side functions by exploiting prototype chain traversal. Attackers append 'prototype.constructor' to Cloud Function URLs to circumvent access controls (requireUser, requireMaster, custom validators), enabling unauthorized execution of backend business logic. Affects Parse Server versions prior to 8.6.67 and 9.7.0-alpha.11. No public exploit identified at time of analysis, though the attack vector is network-accessible with low complexity (CVSS:4.0 AV:N/AC:L/PR:N). The vulnerability stems from inconsistent prototype chain resolution between handler and validator stores (CWE-863: Incorrect Authorization).

Node.js Authentication Bypass
NVD GitHub VulDB
EPSS 0% CVSS 8.6
HIGH PATCH This Week

WebSocket session fixation in OpenClaw before version 2026.3.28 enables attackers to maintain unauthorized access after credential revocation. The vulnerability permits unauthenticated remote attackers (CVSS PR:N) to exploit persistent WebSocket connections that fail to terminate when device tokens are revoked, resulting in high confidentiality impact. No public exploit identified at time of analysis, though the attack vector is network-accessible with low complexity. EPSS data not available; affects OpenClaw deployments with WebSocket-based device communication.

Authentication Bypass Openclaw
NVD GitHub VulDB
EPSS 0% CVSS 9.4
CRITICAL POC PATCH Act Now

Privilege escalation in OpenClaw (pre-2026.3.28) allows unauthenticated remote attackers to gain administrative access by exploiting missing scope validation in the device pairing approval workflow. The /pair approve command fails to forward caller scopes during approval checks, enabling attackers with basic pairing privileges-or potentially no privileges given the CVSS PR:N vector-to approve device requests with elevated admin scopes. EPSS data not available; no public exploit identified at time of analysis, though the CVSS 9.8 reflects trivial exploitation due to network accessibility, low complexity, and no authentication barrier. Vendor-released patch: commit e403dec (2026.3.28+).

Privilege Escalation Authentication Bypass Openclaw
NVD GitHub VulDB
EPSS 0% CVSS 5.3
MEDIUM PATCH This Month

Authorization policy bypass in OpenClaw messaging extensions allows unauthenticated remote attackers to circumvent sender allowlist restrictions and interact with bots without authorization. The vulnerability affects OpenClaw versions prior to 2026.3.28, specifically impacting Google Chat and Zalouser extensions where route-level group allowlist policies silently downgrade to open policy during resolution. With CVSS 9.8 (critical severity, network-accessible, no authentication required) and EPSS data unavailable, this represents a significant access control failure. No public exploit identified at time of analysis, though the attack complexity is low and requires no user interaction.

Authentication Bypass Google
NVD GitHub VulDB
EPSS 0% CVSS 8.6
HIGH PATCH This Week

Privilege escalation in OpenClaw versions prior to 2026.3.28 enables unauthenticated remote attackers to approve node pairings with unauthorized elevated scopes, bypassing authorization controls through missing callerScopes validation in the node pairing approval mechanism. This vulnerability (CWE-863: Incorrect Authorization) allows attackers to extend privileges onto paired nodes beyond their intended authorization level. CVSS 9.8 Critical with network-accessible attack vector requiring no authentication or user interaction. No public exploit identified at time of analysis, with EPSS data not available for this recent CVE.

Authentication Bypass Openclaw
NVD GitHub VulDB
EPSS 0% CVSS 6.9
MEDIUM PATCH This Month

Unauthenticated attackers can force OpenClaw versions before 2026.3.28 to download and store arbitrary media files through Zalo messaging channels, bypassing sender authorization checks. The flaw allows remote exploitation without authentication (CVSS 9.8 critical) to consume network bandwidth and storage resources. No public exploit identified at time of analysis, though the attack vector is straightforward given the lack of pre-validation authorization checks. Vendor-released patch available via commit 68ceaf7a5.

Authentication Bypass Openclaw
NVD GitHub VulDB
EPSS 0% CVSS 7.7
HIGH PATCH This Week

Nhost CLI MCP server before version 1.41.0 allows cross-origin requests without authentication when explicitly configured to listen on a network port, enabling malicious websites to invoke privileged tools using developer credentials. The vulnerability requires two explicit non-default configuration steps and does not affect the default configuration, significantly limiting real-world exposure.

Authentication Bypass Nhost
NVD GitHub VulDB
EPSS 0% CVSS 10.0
CRITICAL PATCH Act Now

Unauthenticated HTTP proxy abuse in FastGPT (AI Agent platform) prior to v4.14.9.5 allows remote attackers to relay arbitrary HTTP requests through the server. The /api/core/app/httpTools/runTool endpoint accepts user-controlled URLs, methods, headers, and body parameters without authentication, functioning as an open proxy for network pivoting, credential theft, and internal network reconnaissance. CVSS 10.0 (Critical) with network attack vector and no privileges required. No public exploit identified at time of analysis, though exploitation is trivial given the exposed endpoint design. EPSS data not available.

Authentication Bypass Fastgpt
NVD GitHub VulDB
EPSS 0% CVSS 6.5
MEDIUM PATCH This Month

PowerDNS dnsdist allows unauthenticated DNS over HTTPS (DoH) queries to bypass access control lists when the early_acl_drop option is disabled on nghttp2 frontends, exposing the DNS resolver to unauthorized query submission and potential information disclosure. Affected versions include dnsdist across multiple releases where this configuration weakness exists; the vulnerability has a CVSS score of 6.5 and exposes both confidentiality and integrity concerns despite not affecting availability.

Authentication Bypass Dnsdist
NVD
EPSS 0% CVSS 4.3
MEDIUM This Month

User Profile Builder plugin for WordPress up to version 3.15.5 allows authenticated subscribers and above to reassign ownership of arbitrary posts and attachments through insecure direct object reference (IDOR) in the wppb_save_avatar_value() function. The vulnerability lacks validation on user-controlled keys, enabling privilege escalation where low-privileged users can modify post_author fields to take control of content created by other users. No public exploit code or active exploitation has been identified at time of analysis.

WordPress Authentication Bypass
NVD
EPSS 0% CVSS 2.3
LOW PATCH Monitor

Authorization bypass in OpenClaw's Microsoft Teams plugin allows unauthenticated remote attackers to circumvent sender allowlists and trigger replies in restricted Teams routes. Affecting OpenClaw versions before 2026.3.8, the flaw manifests when team/channel route allowlists contain empty groupAllowFrom parameters, causing the message handler to synthesize wildcard sender authorization instead of enforcing intended restrictions. No public exploit identified at time of analysis, though CVSS 7.5 reflects network-accessible exploitation with low complexity requiring no authentication. Vendor-released patch available in version 2026.3.8 with upstream commit 88aee916.

Authentication Bypass Microsoft
NVD GitHub
EPSS 0% CVSS 6.3
MEDIUM PATCH This Month

OpenClaw before version 2026.3.12 allows authenticated attackers to bypass rate limiting on webhook secret validation by exploiting a logic flaw that applies rate limits only after successful authentication, enabling brute-force attacks against webhook credentials and injection of forged Zalo webhook traffic. The vulnerability requires authenticated access but results in high-confidence credential compromise.

Authentication Bypass Openclaw
NVD GitHub
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Quick Facts

Typical Severity
CRITICAL
Category
auth
Total CVEs
32005

MITRE ATT&CK

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