# CVE-2025-65945: auth0/node-jws improper HMAC signature verification vulnerability

> CVE-2025-65945: auth0/node-jws improper HMAC signature verification vulnerability. CVSS 7.5 (CVSS 3.1).

Canonical: https://rewindex.com/cve/CVE-2025-65945
Last updated: 2026-10-18T15:10:00Z

- Published: 2025-12-04 18:45 UTC · Updated: 2026-10-18 15:10 UTC · Assigner: GitHub\_M
- CVSS: 7.5 (CVSS 3.1) · Severity: High · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
- EPSS: 0.22%, 12th percentile (scored 2026-10-25)
- CISA KEV: no
- CWE: CWE-347

## Description

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 vendors and products

- auth0: node-jws

## Tracked companies

- [Auth0](https://rewindex.com/company/auth0.md)

## References

- [CVE record on cve.org](https://www.cve.org/CVERecord?id=CVE-2025-65945)
- [NVD entry](https://nvd.nist.gov/vuln/detail/CVE-2025-65945)
- [https://github.com/auth0/node-jws/commit/34c45b2c04434f925b638de6a061de9339c0ea2e](https://github.com/auth0/node-jws/commit/34c45b2c04434f925b638de6a061de9339c0ea2e)
- [https://github.com/auth0/node-jws/security/advisories/GHSA-869p-cjfg-cm3x](https://github.com/auth0/node-jws/security/advisories/GHSA-869p-cjfg-cm3x)

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_Sources: CVE records from the CVE Program (cve.org). CVE® is a registered trademark of The MITRE Corporation. (https://www.cve.org/) This product uses data from the NVD API but is not endorsed or certified by the NVD. (https://nvd.nist.gov/) Known Exploited Vulnerabilities catalog from CISA. (https://www.cisa.gov/known-exploited-vulnerabilities-catalog) EPSS scores from FIRST (Exploit Prediction Scoring System). (https://www.first.org/epss/)_


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Canonical: https://rewindex.com/cve/CVE-2025-65945 · Markdown: https://rewindex.com/cve/CVE-2025-65945.md · JSON: https://rewindex.com/api/v1/cves/CVE-2025-65945 · Data licensed CC BY 4.0 (https://creativecommons.org/licenses/by/4.0/) · Generated 2026-10-26T03:10:12.650Z