CVE-2026-89086

Published Sep 10, 2026

Last updated 11 days ago

CVSS critical 9.1

Overview

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.
Source
cve@mitre.org
NVD status
Received

Risk scores

CVSS 3.1

Type
Secondary
Base score
9.1
Impact score
5.2
Exploitability score
3.9
Vector string
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Severity
CRITICAL

Weaknesses

cve@mitre.org
CWE-347

Social media

Hype score
Not currently trending

References

Sources include official advisories and independent security research.