CVE-2026-89086

9.1 criticalEPSS 0.3%

Critical (9.1). EPSS 0.3% chance of exploitation in the next 30 days.

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.

Severity

CVSS 3.1

9.1 critical

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS: 0.3% chance of exploitation in the next 30 days; higher than 20% of CVEs (scores of 2026-10-31)
CWE: CWE-347
Published: 2026-09-10
Modified: 2026-09-22
Record from: the NVD, synced 2026-10-19

References

https://github.com/ulrikstrid/ocaml-jose/commit/cf17d991ec6a0d1997956b6c7799890f9c28879e
https://osv.dev/vulnerability/OSEC-2026-19

Check your stack JSON