Manual HTML sanitization detected.

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('<', '&lt;')
.replaceAll('>', '&gt;');
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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