Security Guides Security Audits
Frontend Security • Sep 2026

XSS Prevention Guide: Sanitizing Input and Escaping Output

Mitigate Stored, Reflected, and DOM-based XSS attacks in modern frontend frameworks like React, Vue, and Angular.


Context-Aware Output Encoding

Prevent XSS by applying context-aware HTML entity encoding, setting httpOnly cookie flags, and avoiding dangerous methods like dangerouslySetInnerHTML.