This document summarizes Antonio Sanso's presentation on vulnerabilities in OAuth 2.0 implementations. It discusses the history and components of OAuth 1.0 and 2.0. Sanso then outlines some common vulnerabilities in OAuth 2.0, including open redirects due to improper validation of redirect URIs, authorization code reuse attacks, and access token leakage via URI spoofing. He emphasizes that OAuth 2.0 itself does not provide security and vulnerabilities can arise if implementations do not follow best practices.