pentester.land· Dec 15, 2023· by Dylan Ayrey (@insecurenature)💰 Bounty: 1,337

Google OAuth is broken (sort of)

Target Program: Google, Zoom, Slack

🎯 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