CVE-2026-89086

critical · 9.1

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.

9.1

CVSS

0.3%

EPSS (exploit prob.)

20th

EPSS percentile

2026-09-10

Published

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

Weaknesses

CWE-347

References

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

Query this programmatically:

curl https://evil-db.io/api/v1/cve/CVE-2026-89086