Avoid manual sanitization of inputs

Docs > Code Analysis > Static Analysis Rules > Avoid manual sanitization of inputs

Cette page n'est pas encore disponible en français, sa traduction est en cours.
Si vous avez des questions ou des retours sur notre projet de traduction actuel, n'hésitez pas à nous contacter.

Metadata

ID: javascript-browser-security/manual-sanitization

Language: JavaScript

Severity: Warning

Category: Security

CWE: 79

Description

Never sanitize HTML input manually. It can lead to vulnerabilities. Use dedicated modules such as sanitize-html to sanitize user inputs.

Non-Compliant Code Examples

const sanitizedInput = input
  .replaceAll('<', '&lt;')
  .replaceAll('>', '&gt;');
const html = `<strong>${sanitizedInput}</strong>`;

const sanitizedInput2 = input
  .replaceAll('bla', '&lt;')
  .replaceAll('foo', '&gt;');

const sanitizedInput3 = input
  .replaceAll('<', '&lt')
  .replaceAll('>', 'gt;');

Compliant Code Examples

import sanitizeHtml from 'sanitize-html';

const html = sanitizeHtml(`<strong>${input}</strong>`);