pentester.land· May 24, 2023· by Aviad Carmel (@AviadCarmel)

Salt Labs exposes a new vulnerability in popular OAuth framework, used in hundreds of online services

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Target Program: Expo, Codeacademy.com
🎯 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#Account takeover