CVE-2025-66309: Getgrav Grav-Plugin-Admin

Medium severity, CVSS 6.1. EPSS: 0.2% chance of exploitation in the next 30 days.

This admin plugin for Grav is an HTML user interface that provides a convenient way to configure Grav and easily create and modify pages. Prior to 1.11.0-beta.1, a Reflected Cross-Site Scripting (XSS) vulnerability was identified in the /admin/pages/[page] endpoint of the Grav application. This vulnerability allows attackers to inject malicious scripts into the data[header][content][items] parameter. This vulnerability is fixed in 1.11.0-beta.1.

Affected products

• Getgrav Grav-Plugin-Admin: up to and including 1.10.50

Published 2025-12-01. Last modified 2026-06-17.