Hacktron chains forums.openai.com postMessage XSS with exposed Mojo IPC in OpenAI ChatGPT Atlas to steal OAuth tokens
Researchers at Hacktron disclosed a vulnerability chain in OpenAI's ChatGPT Atlas Chromium-based AI browser that lets an attacker monitor all open tabs and capture OAuth authorization codes for any site, effectively breaking the same-origin policy. Atlas exposes Mojo IPC bindings to all .chatgpt.com and .openai.com origins, so a single XS…