pentester.land· May 20, 2021· by Guilherme Keerok (@k33r0k)💰 Bounty: 500

XSS via postMessage in chat.mozilla.org

Open Original Article ↗
Target Program: Mozilla
🎯 Vulnerability: Cross-Site Scripting (XSS)
💡 Defense Fix: Enforce Context-Aware Output Encoding, strict Content-Security-Policy (CSP), and HttpOnly cookie flags.
#XSS#postMessage