pentester.land· Aug 7, 2022· by Sharat Kaikolamthuruthil (@sharp488)

2FA Bypass via Google Identity & OAuth Login

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'.

#2FA / MFA bypass#Account takeover