CVE-2025-66309 – Grav vulnerable to Cross-Site Scripting (XSS) Reflected endpoint /admin/pages/[page], parameter data[header][content][items], located in the “Blog Config” tab

CVE ID : CVE-2025-66309

Published : Dec. 1, 2025, 10:02 p.m. | 22 minutes ago

Description : 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.

Severity: 0.0 | NA

Visit the link for more details, such as CVSS details, affected products, timeline, and more…