pentester.land· Mar 16, 2023· by Mohamed Lakhdar Metidji (@minometidjii)

OAuth 2.0 Authentication Misconfiguration

Target Program: -

🎯 Vulnerability: OAuth 2.0 / JWT Authentication Bypass

💡 Defense Fix: Strictly verify JWT signatures on the backend, enforce state parameter validation, and reject 'alg: none'.

#OAuth#Account takeover#Open redirect#Token leak