CVE-2025-65945
auth0/node-jws improper HMAC signature verification vulnerability
HIGH 7.5EPSS 0.2%
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.
- Affected
- auth0 · node-jws
- CVSS v3.1 GITHUB
- 7.5 HIGH
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N - EPSS
- 0.21% chance of exploitation in the next 30 days, 11th percentile
- Published
- 2025-12-04
- Updated
- 2025-12-05
Proof-of-concept exploits (1)
- jedisct1/CVE-2025-65945-poc4★ · 2025-12-17
Security advisories
- auth0/node-jws/security/advisories/GHSA-869p-cjfg-cm3x
- advisories/GHSA-869p-cjfg-cm3x
- auth0/node-jws/commit/34c45b2c04434f925b638de6a061de9339c0ea2e