CVE-2026-89086: CWE-347 Improper Verification of Cryptographic Signature in OCaml jose
In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only confirm that PKCS #1 decoding succeeds, and proceed to declare the signature valid without the required steps that involve the public key.
CVE-2026-89086: CWE-347 Improper Verification of Cryptographic Signature in OCaml jose
Description
In the jose package before 0.11.0 for OCaml, library calls to validate an RSA signature only confirm that PKCS #1 decoding succeeds, and proceed to declare the signature valid without the required steps that involve the public key.
CVSS v3.1
Score 9.1critical
Affected software
OCaml
jose
Weaknesses
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- mitre
- Date Reserved
- 2026-09-10T19:52:46.560Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 6aa30cd191cc7f3848a605fc
Added to database: 09/10/2026, 20:02:25 UTC
Last updated: 09/10/2026, 20:02:25 UTC
Views: 1
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