Cascade Introduced XSS Vulnerability in Templates

1. Cascade used th:utext='${variable}' instead of th:text for unescaped output
2. User comment or name rendered directly without sanitization
3. Cascade removed HTML escaping in frontend template or disabled it

Use th:text='${variable}' instead of th:utext to enable HTML escaping. Sanitize user input server-side if HTML is needed. Use security libraries like OWASP ESAPI or DOMPurify for sanitization. Never render user input directly without escaping. Review all template variables for proper escaping.