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CVE-2025-66308

Grav Admin Plugin vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/config/site` parameter `data[taxonomies]`

Published: Dec 1, 2025Updated: Dec 3, 2025 Sources: CVE List NVD GHSACWE-79
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
0.2%
Top 92.5%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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 Vector Breakdown

AV:NAC:LPR:LUI:RS:CC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:RUser Interaction
Required
Scope
S:CScope
Changed
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
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Weaknesses

CWE-79

Affected Products

gravgetgrav
On-premCMS Plugin
Web & CMS Plugins / cms-core
getgrav/gravPackagistOSS Libraries
grav-plugin-admingetgrav
On-prem
Web & CMS Plugins / cms-core
getgravoss-projectWeb & CMS Pluginsaka grav, grav-plugin-admin, getgrav/grav
packagistpackage-ecosystemOSS Libraries

Attack Graph

Products CVE Techniques Tactics

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Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/getgrav/grav/security/advisories/GHSA-gqxx-248x-g29f
github.com
https://github.com/getgrav/grav-plugin-admin/commit/99f653296504f1d6408510dd2f6f20a45a26f9b0
github.com
https://nvd.nist.gov/vuln/detail/CVE-2025-66308
nvd.nist.gov
and 1 more references View all →

Timeline

Published
Dec 1, 2025
Last Updated
Dec 3, 2025

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