pentester.land· Dec 12, 2023· by Ostorlab (@OstorlabSec)

One Scheme to Rule Them All: OAuth Account Takeover

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#Account takeover#Android#iOS