Unsanitized user input detected in raw HTML string.

Rule ID: javascript_lang_raw_html_using_user_input
Languages: javascript
Source: <a class="text-main dark:text-main-300 hover:underline" href="https://github.com/bearer/bearer-rules/blob/main/javascript/lang/raw_html_using_user_input.yml">raw_html_using_user_input.yml

Description

Applications should not include unsanitized user input in HTML. This can allow cross-site scripting (XSS) attacks.

❌ Avoid including user input directly in HTML strings:

const html = `<h1>${req.params.title}</h1>`

✅ Use a framework or templating language to construct the HTML.

✅ When HTML strings must be used, sanitize user input:

import sanitizeHtml from 'sanitize-html'

const sanitizedTitle = sanitizeHtml(req.params.title)
const html = `<h1>${sanitizedTitle}</h1>`