What is the CVSS score of CVE-2025-65945?

CVE-2025-65945 has a CVSS 3.1 base score of 7.5 (High). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N. EPSS exploitation probability: 0.0%.

Is there a public PoC exploit available for CVE-2025-65945?

Yes, a public proof-of-concept exploit is available for CVE-2025-65945. Prioritise patching immediately. EPSS: 0.0%.

How to fix or mitigate CVE-2025-65945?

Within 24 hours: Identify all applications and services using auth0/node-jws versions 3.2.2 or earlier, and version 4.0.0; assess whether jws.createVerify() is used with HS256 algorithms. Within 7 days: Deploy patches to upgrade to versions 3.2.3 or 4.0.1 across all affected systems, beginning with production authentication infrastructure. Within 30 days: Conduct security testing and log analysis to determine if this vulnerability was exploited; rotate any JWT secrets or signing keys as a precaution.

Node.js CVE-2025-65945

Q: Which versions of Node.js are affected by CVE-2025-65945?

A signature verification bypass vulnerability exists in the auth0/node-jws library that could allow attackers to forge valid JSON Web Tokens, potentially leading to unauthorized authentication and…. A patch is available.

EUVD-2025-201250 HIGH

Improper Verification of Cryptographic Signature (CWE-347)

2025-12-04 security-advisories@github.com

GHSA-869p-cjfg-cm3x

Authentication Bypass Node.js Jwt Attack Node Jws Auth0

7.5

CVSS 3.1 · Vendor: github

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Vulnerability Assessment

Weakness	CWE CWE-347 OWASP Top 10:2025 A04:2025 - Cryptographic Failures ASVS 5.0 V11 - Cryptography Signature verification
Impact	CVSS score of 7.5 (HIGH).

This Week Schedule remediation this week. Why: HIGH severity (CVSS 7.0-8.9).

Patch available 0.0% exploitation probability (EPSS)

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AnalysisAIv1 – Mar 15, 2026

auth0/node-jws is a JSON Web Signature implementation for Node.js. In versions 3.2.2 and earlier and version 4.0.0, auth0/node-jws has an improper signature verification vulnerability when using the HS256 algorithm under specific conditions. Applications are affected when they use the jws.createVerify() function for HMAC algorithms and use user-provided data from the JSON Web Signature protected header or payload in HMAC secret lookup routines, which can allow attackers to bypass signature verification. This issue has been patched in versions 3.2.3 and 4.0.1.

Earlier versions of this analysis (1)

v1 Mar 15, 2026 - 16:35 CVSS 7.5

RemediationAI

A vendor patch is available. Apply it as soon as possible and verify the fix.

Affected VersionsENISA

node-jws < 3.2.3

node-jws 4.0.0, ≤ 4.0.1

Affected Packages

npm jws fix: 3.2.3, 4.0.1

euvd node_jws fix: 3.2.3

Source: OSV (Open Source Vulnerabilities)

Affects your stack

Affects 2 packages in npm, euvd

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Improper Verification of Cryptographic Signature (CWE-347).

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

Vendor (github) PRIMARY 7.5 HIGH

AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N

Red Hat 7.5 HIGH

Primary rating from Vendor (github).

CVSS VectorVendor: github

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

High

Availability

None

Lifecycle Timeline

Patch released

Mar 15, 2026 - 16:35 nvd

Patch available

CVE Published

Dec 04, 2025 - 19:16 nvd

HIGH 7.5

Executive ViewAI

Why It Matters

A signature verification bypass vulnerability exists in the auth0/node-jws library that could allow attackers to forge valid JSON Web Tokens, potentially leading to unauthorized authentication and data access. Organizations using affected versions of this library in authentication or token validation workflows require immediate patching to prevent credential compromise and unauthorized system access.

Business Impact: High

Compensating Controls

Apply vendor patch.

Threat Intelligence Overview

EPSS Score

0.0%

Top 99% exploitable

Exploit

POC

Public exploit code exists

Data Quality

6 sources

Confidence: High

EUVD

NVD

CVE.org

EPSS Vendor

GitHub

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity HIGH

CISA KEV No

Public POC Yes

EPSS 0.0%

Patch available Yes

Active threat No

Deciding rule

HIGH severity (CVSS 7.0-8.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Out-of-Cycle

Exploitation· derived

Poc

System Exposure· derived

Open

Automatable· derived

Yes

Human Impact

High

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +38

PoC: +20

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

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

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Vendor StatusVendor

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