pentester.land· Dec 13, 2023· by Sufiyan Gouri (@gouri_sufyan)

How OAuth Implicit Flow Led To Hundreds Of User Accounts Being Accessed?

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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'.
#OAuth