CVE-2026-96760: authlib: authlib: Signature verification bypass via deserialize_json

Severity: Critical

CVSS Score: 9.8

Authlib (v1.7.2 and below) contains a signature verification bypass vulnerability. The JsonWebSignature.deserialize_json() method accepts a JSON Serialization JWS object and returns the payload as successfully verified without checking for a signature and without requiring a cryptographic key.