Testing for XSS Vulnerabilities When to Use - Testing web applications for client-side injection vulnerabilities as part of OWASP WSTG testing - Evaluating the effectiveness of input sanitization and output encoding across all application features - Assessing the protection provided by Content Security Policy (CSP) headers against XSS exploitation - Demonstrating the impact of XSS through session hijacking, credential theft, or phishing overlay to stakeholders - Testing single-page applications (React, Angular, Vue) for DOM-based XSS in client-side routing and rendering Do not use against app…