VULNERABILITY INTELLIGENCE
CVE-2026-84185
CVSS score5.9 MEDIUM
EPSS probability0.13%
CISA KEVNot currently listed
Published2026-09-03
Last modified2026-09-08
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:H/A:N
Description
A flaw was found in the jwcrypto library, which is used for implementing Javascript Object Signing and Encryption (JOSE) standards. The issue occurs when the library verifies a General JSON Serialization JWS using a set of keys. Due to a coding error, the library fails to correctly identify the specific key ID (kid) and may instead accept a signature made by any valid key in the set. This can allow an attacker with a valid key to bypass authorization checks in applications that rely on the key ID to identify specific tenants or users.
Weakness classification
- secalert@redhat.com: CWE-347