pentester.land· Apr 2, 2024· by Muhammad Mostafa (@0xSekiro)

Oauth Misconfiguration Leads to 0-Click ATO

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'.

#Account takeover#Authentication bypass#OAuth