POST to XSS: Leveraging Pseudo Protocols to Gain JavaScript Evaluation in SSO Flows
Target Program: OneLogin, Authentik, FusionAuth, Keycloak, MiniOrange / xecurify, LemonLDAP:NG
🎯 Vulnerability: Cross-Site Scripting (XSS)
💡 Defense Fix: Enforce Context-Aware Output Encoding, strict Content-Security-Policy (CSP), and HttpOnly cookie flags.