Claude AI Finds Full Authentication Bypasses Across Multiple SAML Libraries

A newly disclosed critical vulnerabilities across several open-source SAML implementations through an AI-assisted research pipeline using Anthropic’s Claude Opus. Documented by Eric Chiang, the investigation uncovered full authentication bypasses, weaknesses in XML signature validation, information disclosure risks, arbitrary logout flaws, and denial-of-service conditions . SAML remains particularly difficult to implement securely because it depends on XML Digital Signatures.…