CVE-2025-66308

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 Stored Cross-Site Scripting (XSS) vulnerability was identified in the /admin/config/site endpoint of the Grav application. This vulnerability allows attackers to inject malicious scripts into the data[taxonomies] parameter. The injected payload is stored on the server and automatically executed in the browser of any user who accesses the affected site configuration, resulting in a persistent attack vector. This vulnerability is fixed in 1.11.0-beta.1.

CVSS v3.1 Score

5.4

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Weakness Type (CWE)

CWE-79 Cross-site Scripting (XSS)

Affected Products

Vendor	Product	Versions
getgrav	grav-plugin-admin	< 1.10.50

References

Advisories & Patches

https://github.com/getgrav/grav-plugin-admin/commit/99f653296504f1d6408510dd2f6f20a45a26f9b0 https://github.com/getgrav/grav/security/advisories/GHSA-gqxx-248x-g29f https://github.com/getgrav/grav/security/advisories/GHSA-gqxx-248x-g29f

Exploits

https://github.com/getgrav/grav/security/advisories/GHSA-gqxx-248x-g29f https://github.com/getgrav/grav/security/advisories/GHSA-gqxx-248x-g29f

Frequently Asked Questions

What is CVE-2025-66308? +

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/config/site endpoint of the Grav application. This vulnerability allows attackers to inject malicious scripts into the data[taxonomies] parameter. The injected payload is stored on the server and automatically executed in the browser of any user who accesses the affected site configuration, resulting in a persistent attack vector. This vulnerability is fixed in 1.11.0-beta.1. It has a CVSS v3.1 base score of 5.4 (MEDIUM).

How severe is CVE-2025-66308? +

CVE-2025-66308 has a CVSS v3.1 score of 5.4 out of 10, rated MEDIUM. This is a medium-severity vulnerability that should be remediated as part of regular maintenance.

What products are affected by CVE-2025-66308? +

CVE-2025-66308 affects products from getgrav, specifically: grav-plugin-admin. Check the affected products table above for specific version ranges.

How do I check if I'm vulnerable to CVE-2025-66308? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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