pentester.land· Mar 10, 2023· by Vikas Anil Sharma (@vikzsharma)

Clipchamp ( Microsoft Office Product) - Google IAP Authorization bypass allowed access to Internal Environment Leading to Zero Interaction Account takeover

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Target Program: Microsoft (ClipChamp)
🎯 Vulnerability: OAuth 2.0 / JWT Authentication Bypass
💡 Defense Fix: Strictly verify JWT signatures on the backend, enforce state parameter validation, and reject 'alg: none'.
#Authorization bypass#JWT#Account takeover