Medium severity5.9NVD Advisory· Published Feb 1, 2023· Updated Jun 17, 2026
CVE-2023-23928
CVE-2023-23928
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: < 0.8.2
- Range: >=0.8.2
Patches
Vulnerability mechanics
References
3- github.com/ulrikstrid/reason-jose/commit/36cd724db3cbec121757624da49072386bd869e5nvdPatchThird Party Advisory
- github.com/ulrikstrid/reason-jose/releases/tag/v0.8.2nvdRelease NotesThird Party Advisory
- github.com/ulrikstrid/reason-jose/security/advisories/GHSA-7jj9-6qwv-wpm7nvdThird Party Advisory
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