Reflected Cross-Site Scripting Vulnerability in Grav Admin Plugin
CVE-2025-66309

6.2MEDIUM

Key Information:

Vendor

Getgrav

Status
Grav
Vendor
CVE Published:
1 December 2025

What is CVE-2025-66309?

The Grav Admin Plugin, which provides an HTML user interface for configuring and managing the Grav application, has a Reflected Cross-Site Scripting (XSS) vulnerability in the /admin/pages/[page] endpoint. This vulnerability can be exploited by attackers to inject malicious scripts through the data[header][content][items] parameter, potentially compromising the security of affected setups. The issue has been resolved in versions 1.11.0-beta.1 and later, emphasizing the necessity for users to update their installations promptly.

Affected Version(s)

grav < 1.11.0-beta.1

References

https://github.com/getgrav/grav/security/advisories/GHSA-...
x_refsource_CONFIRM
https://github.com/getgrav/grav-plugin-admin/commit/99f65...
x_refsource_MISC

CVSS V4

Score:
6.2
Severity:
MEDIUM
Confidentiality:
Low
Integrity:
Low
Availability:
None
Attack Vector:
Network
Attack Complexity:
Low
Attack Required:
None
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.