Manual HTML sanitization detected.
- Rule ID: javascript_lang_manual_html_sanitization
- Languages: javascript
- Source: manual_html_sanitization.yml
Description
Sanitizing HTML manually is error prone and can lead to Cross Site Scripting (XSS) vulnerabilities.
Remediations
❌ Avoid manually escaping HTML:
const sanitizedUserInput = user.Input
.replaceAll('<', '<')
.replaceAll('>', '>');
const html = `<strong>${sanitizedUserInput}</strong>`;
✅ Use a HTML sanitization library:
import sanitizeHtml from 'sanitize-html';
const html = sanitizeHtml(`<strong>${user.Input}</strong>`);
Resources
Associated CWE
OWASP Top 10
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