CVE-2025-55420: Foxcms

High severity, CVSS 8.8. EPSS: 0.5% chance of exploitation in the next 30 days.

A Reflected Cross Site Scripting (XSS) vulnerability was found in /index.php in FoxCMS v1.2.6. When a crafted script is sent via a GET request, it is reflected unsanitized into the HTML response. This permits execution of arbitrary JavaScript code when a logged-in user submits the malicious input.

Affected products

• Foxcms Foxcms: version 1.2.6 only

Published 2025-08-21. Last modified 2026-06-17.