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Vulnerability record · CVE-2025-66311 · published 1 December 2025

CVE-2025-66311: Getgrav grav-plugin-admin cross-site scripting vulnerability

Getgrav · Grav Plugin Admin

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][metadata], data[header][taxonomy][category], and data[header][taxonomy][tag] parameters. These scripts are stored in the page frontmatter and executed automatically whenever the affected page is accessed or rendered in the administrative interface. This vulnerability is fixed in 1.11.0-beta.1.

6.2 CVSS 4.0 Medium EPSS 0.21% · top 89.5% CWE-79 · Cross-site scripting
6.2CVSS 4.0 base score
0.21%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
3References, 2 tagged exploit
26 Sep 2026Last modified by NVD

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/pages/[page] endpoint of the Grav application. This vulnerability allows attackers to inject malicious scripts into the data[header][metadata], data[header][taxonomy][category], and data[header][taxonomy][tag] parameters. These scripts are stored in the page frontmatter and executed automatically whenever the affected page is accessed or rendered in the administrative interface. This vulnerability is fixed in 1.11.0-beta.1.

CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://github.com/getgrav/grav-plugin-admin/commit/99f653296504f1d6408510dd2f6f20a45a26f9b0 Patch
https://github.com/getgrav/grav/security/advisories/GHSA-mpjj-4688-3fxg ExploitVendor Advisory
https://github.com/getgrav/grav/security/advisories/GHSA-mpjj-4688-3fxg ExploitVendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2021-21425Grav Admin Plugin unauthenticated access control allows YAML write and RCEGrav Admin Plugin 1.10.7 and earlier lets an unauthenticated user invoke administrator controller methods without credentials. Those calls can create…EPSS 81%analysed6.8CVE-2025-66308Getgrav grav-plugin-admin cross-site scripting vulnerabilityThis 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.…EPSS 0.21%6.2CVE-2025-66310Getgrav grav-plugin-admin cross-site scripting vulnerabilityThis 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.…EPSS 0.21%6.2CVE-2025-66312Getgrav grav-plugin-admin cross-site scripting vulnerabilityThis 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.…EPSS 0.21%6.2CVE-2025-66309Getgrav grav-plugin-admin cross-site scripting vulnerabilityThis 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.…EPSS 0.23%5.4CVE-2021-3920Getgrav grav-plugin-admin cross-site scripting vulnerabilitygrav-plugin-admin is vulnerable to Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')EPSS 1.4%5.4CVE-2021-3799Getgrav grav-plugin-admin clickjacking vulnerabilitygrav-plugin-admin is vulnerable to Improper Restriction of Rendered UI Layers or FramesEPSS 1.6%5.3CVE-2025-66307Getgrav grav-plugin-admin vulnerabilityThis 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.…EPSS 0.32%

Source: NIST National Vulnerability Database (record CVE-2025-66311), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.