pentester.land· Jun 20, 2021· by Samrat Gupta (@Sm4rty_)

Stored XSS via Invite leading to Mass Account Takeover at Opera.

Target Program: Opera

🎯 Vulnerability: Cross-Site Scripting (XSS)

💡 Defense Fix: Enforce Context-Aware Output Encoding, strict Content-Security-Policy (CSP), and HttpOnly cookie flags.

#Stored XSS