VULNERABILITY INTELLIGENCE

CVE-2023-23928

CVSS score5.9 MEDIUM
EPSS probability0.46%
CISA KEVNot currently listed
Published2023-02-01
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N

Description

reason-jose is a JOSE implementation in ReasonML and OCaml.`Jose.Jws.validate` does not check HS256 signatures. This allows tampering of JWS header and payload data if the service does not perform additional checks. Such tampering could expose applications using reason-jose to authorization bypass. Applications relying on JWS claims assertion to enforce security boundaries may be vulnerable to privilege escalation. This issue has been patched in version 0.8.2.

Weakness classification

  • security-advisories@github.com: CWE-347

Primary references