CVE-2026-84185
MEDIUM
MEDIUM
Priority: 0.01
BB Relevance:
52/100
Published: 2026-09-03
Modified: 2026-11-06
First seen: 2026-11-06
Status: active
Attack Surface
Network
No Interaction
Integ. Impact
CVSS Vector Breakdown
AV:
Network
AC:
High
PR:
Low
UI:
None
S:
Unchanged
C:
Low
I:
High
A:
None
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.