grav up to 1.10.x Admin Plugin /admin/pages/ cross site scripting

Summaryinfo

A vulnerability has been found in grav up to 1.10.x and classified as problematic. The impacted element is an unknown function of the file /admin/pages/ of the component Admin Plugin. Performing a manipulation results in cross site scripting. This vulnerability is known as CVE-2025-66310. Remote exploitation of the attack is possible. No exploit is available. The affected component should be upgraded.

Detailsinfo

A vulnerability classified as problematic has been found in grav up to 1.10.x. This affects an unknown part of the file /admin/pages/ of the component Admin Plugin. The manipulation with an unknown input leads to a cross site scripting vulnerability. CWE is classifying the issue as CWE-79. The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users. This is going to have an impact on integrity. The summary by CVE is:

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 Stored 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][template] parameter. The script is saved within the page's frontmatter and executed automatically whenever the affected content is rendered in the administrative interface or frontend view. This vulnerability is fixed in 1.11.0-beta.1.

The advisory is shared at github.com. This vulnerability is uniquely identified as CVE-2025-66310 since 11/27/2025. The exploitability is told to be easy. It is possible to initiate the attack remotely. The exploitation requires an enhanced level of successful authentication. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available. MITRE ATT&CK project uses the attack technique T1059.007 for this issue.

Upgrading to version 1.11.0-beta.1 eliminates this vulnerability. Applying the patch 99f653296504f1d6408510dd2f6f20a45a26f9b0 is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2025-200100). Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

Productinfo

Name

• grav

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10

License

• open-source

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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