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.
Fix
Public exploits 1
- jedisct1/CVE-2025-65945-poc PoC on GitHub
Each line links to the index that lists it, never to exploit code. Exploit-DB's "verified" and a Metasploit rank of good or better count as verified; a PoC-in-GitHub entry is a repository's claim.
Patch, vendor advisory and mitigation references on NVD 2
- https://github.com/auth0/node-jws/commit/34c45b2c04434f925b638de6a061de9339c0ea2e Patch
- https://github.com/auth0/node-jws/security/advisories/GHSA-869p-cjfg-cm3x Vendor Advisory
Every line above is quoted from NVD, CISA, Microsoft, the vendor's own advisory or DISA; nothing is generated.
Change history 1
- First seenCVSS 7.5 · auth0NVD modified 2026-10-18 15:10
Affected (CPE criteria) 2
cpe:2.3:a:auth0:node-jws:*:*:*:*:*:node.js:*:*cpe:2.3:a:auth0:node-jws:4.0.0:*:*:*:*:node.js:*:*