Which versions of Jwt Attack are affected by CVE-2026-4115?

CVE-2026-4115 is a low-severity vulnerability in A vulnerability (CVSS 3.7). The limited severity suggests constrained impact, typically requiring specific conditions or local access for…. A patch is available.

Is there a public PoC exploit available for CVE-2026-4115?

Yes, a public proof-of-concept exploit is available for CVE-2026-4115. Prioritise patching immediately. EPSS: 0.0%.

Jwt Attack CVE-2026-4115

Q: What is the CVSS score of CVE-2026-4115?

CVE-2026-4115 has a CVSS 4.0 base score of 2.9 (Low). CVSS vector: CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X. EPSS exploitation probability: 0.0%.

EUVD-2026-14301 LOW

Improper Verification of Cryptographic Signature (CWE-347)

2026-03-22 VulDB

GHSA-p96h-94q2-fh5v

Information Disclosure Jwt Attack

2.9

CVSS 4.0

CVSS VectorNVD

CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Attack Vector

Network

Attack Complexity

High

Privileges Required

None

User Interaction

None

Scope

Lifecycle Timeline

CVSS changed

Apr 29, 2026 - 01:11 NVD

3.7 (LOW) 2.9 (LOW)

PoC Detected

Mar 23, 2026 - 14:31 vuln.today

Public exploit code

EUVD ID Assigned

Mar 22, 2026 - 12:30 euvd

EUVD-2026-14301

Analysis Generated

Mar 22, 2026 - 12:30 vuln.today

Patch released

Mar 22, 2026 - 12:30 nvd

Patch available

CVE Published

Mar 22, 2026 - 12:15 nvd

LOW 3.7

DescriptionNVD

A vulnerability was detected in PuTTY 0.83. Affected is the function eddsa_verify of the file crypto/ecc-ssh.c of the component Ed25519 Signature Handler. The manipulation results in 弱身份验证. The attack may be performed from remote. The attack requires a high level of complexity. The exploitability is told to be difficult. The exploit is now public and may be used. The real existence of this vulnerability is still doubted at the moment. The patch is identified as af996b5ec27ab79bae3882071b9d6acf16044549. It is advisable to implement a patch to correct this issue. The vendor was contacted early, responded in a very professional manner and quickly released a patch for the affected product. However, at the moment there is no proof that this flaw might have any real-world impact.

AnalysisAI

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. …

RemediationAI

During next maintenance window: Apply vendor patches when convenient. Vendor patch is available.

Analysis

Detailed AI-generated intelligence summary covering attack vector, impact assessment, affected versions, remediation steps, and indicators of compromise.

POChttps://••••••••••.com/exploit

PATCHhttps://••••••••••.com/patch

ADVISORYhttps://••••••••••.com/advisory

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Get intelligence summaries, risk assessment, exploit details, threat intel, and remediation guidance.

Vendor StatusVendor

Debian

putty

Release	Status	Fixed Version	Urgency
bullseye	vulnerable	0.74-1+deb11u2	-
bullseye (security)	vulnerable	0.74-1+deb11u1	-
bookworm	vulnerable	0.78-2+deb12u2	-
bookworm (security)	vulnerable	0.78-2+deb12u1	-
forky, sid, trixie	vulnerable	0.83-3	-
(unstable)	fixed	(unfixed)	unimportant

CVE-2026-4115 vulnerability details – vuln.today

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