pentester.land· Jan 13, 2023· by Sivanesh Ashok (@sivaneshashok), Sreeram KL (@kl_sree)💰 Bounty: 3,133.70

Bypassing authorization in Google Cloud Workstations [Google VRP]

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Target Program: Google
🎯 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#OAuth#URL validation bypass