Authlib Vulnerable to JWE RSA1_5 Bleichenbacher Padding Oracle

Executive Summary A cryptographic padding oracle vulnerability was identified in the Authlib Python library concerning the implementation of the JSON Web Encryption JWE RSA15 key management algorithm. Authlib registers RSA15 in its default algorithm registry without requiring explicit opt-in,...

PT-2026-25780

Name of the Vulnerable Software and Affected Versions Authlib versions prior to 1.6.9 Description Authlib, a Python library for building OAuth and OpenID Connect servers, contains a cryptographic padding oracle vulnerability in the implementation of the JSON Web Encryption JWE RSA1 5 key manageme...