Unsanitized user input in HTTP response (XSS)

• Rule ID: javascript_express_cross_site_scripting
• Languages: javascript
• Source: cross_site_scripting.yml

Description

Sending unsanitized user input in a response puts your application at risk of cross-site scripting attacks.

Remediations

❌ Avoid including user input directly in a response:

res.send(req.body.data)

Resources

• OWASP Cross-Site Scripting (XSS) Cheatsheet

Associated CWE

• CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

OWASP Top 10

• A03:2021 - Injection

Configuration

To skip this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --skip-rule=javascript_express_cross_site_scripting

To run only this rule during a scan, use the following flag

bearer scan /path/to/your-project/ --only-rule=javascript_express_cross_site_scripting