pentester.land· May 12, 2022· by Basyouni (@AshrafBasyoni4)

Forging OAuth tokens using discovered client id and client secret

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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'.
#Information disclosure#Account takeover