Ory Oathkeeper Auth Bypass

Ory Oathkeeper, an identity and access proxy, contains an authorization bypass vulnerability via HTTP path traversal that allows attackers to access protected resources without authentication. The vulnerability affects Ory Oathkeeper installations where the software uses un-normalized paths for rule matching, enabling requests like '/public/../admin/secrets' to bypass authentication requirements. With a CVSS score of 10.0 (Critical) and network-based exploitation requiring no privileges or user interaction, this represents a severe authentication bypass, though no current EPSS score or KEV listing indicates limited evidence of active exploitation at this time.

Ory Oathkeeper contains a cache key confusion vulnerability in its oauth2_introspection authenticator that allows attackers to bypass authentication by reusing tokens across different introspection servers. Attackers with a valid token for one configured introspection server can exploit the cache mechanism to gain unauthorized access to resources protected by different introspection servers. This vulnerability requires the specific precondition of multiple oauth2_introspection authenticators with caching enabled, and a patch is available from the vendor.