Vulnerability library
Security checkSeptember 23, 2025

Decap CMS Cross Site Scripting (XSS) vulnerability

Understand the exposure, see the recommended fix, and check whether your own website has related weaknesses.

Medium severitynpmdecap-cms

Check your website

Find this and other vulnerabilities with a free scan.

Your scan runs on your computer. No account required.

Description

Decap CMS through 3.8.3 is vulnerable to stored Cross-Site Scripting (XSS) in the admin preview pane. User-controlled fields (e.g., title, description, tags, and body) are rendered in the preview without sufficient sanitization/escaping.

Recommendation

No fix is available yet. Followings are affected versions:

  • <= 3.8.3

References

Could your website be exposed too?

SmartScanner can check your website for Decap CMS Cross Site Scripting (XSS) vulnerability and gives you actionable findings to investigate.

Start a free scan

Related Issues

You might also like:

CSRF, XXE, and 12 Other Security Acronyms Explained

How do hackers hack websites?

These 7 PHP mistakes leave your website open to the hackers

See something that needs correcting? Let us knowUpdated September 23, 2025