CVE-2026-89086
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.
- Published Sep 10, 2026
- CVSS 9.1 critical
- 0.3% chance of exploitation in the next 30 days (EPSS)
- A fix is available