1. Authlib Python Library Exposes Critical JWT Authentication Bypass via JWK Header Injection (CVE-2026-27962)
A critical vulnerability in the widely-used Python authentication library Authlib allows attackers to forge valid JWT tokens and bypass authentication entirely. The flaw, tracked as CVE-2026-27962, resides in the library's JWS (JSON Web Signature) implementation. When a server uses `key=None` in JWS deserialization fun...