Reflected XSS into a JavaScript string with HTML-encoded angle brackets (<,>)

📰 Medium · JavaScript

Learn to exploit reflected XSS in JavaScript strings with HTML-encoded angle brackets

advanced Published 6 May 2026
Action Steps
  1. Identify JavaScript strings with user-inputted data
  2. Check for HTML-encoded angle brackets
  3. Attempt to inject malicious code using encoded brackets
  4. Test for XSS vulnerabilities using a web application scanner
  5. Validate user input to prevent XSS attacks
Who Needs to Know This

Security teams and web developers can benefit from understanding this exploit to improve their application's security

Key Insight

💡 HTML-encoded angle brackets can still be used to inject malicious code in JavaScript strings

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🚨 Reflected XSS in JavaScript strings with HTML-encoded angle brackets: a new security threat? 🚨
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