PT-2025-48570 · Grav · Grav Admin Plugin+1

Published 2025-12-01 · Updated 2025-12-02 · CVE-2025-66311

Positive Technologies (AI Summary)

CVSS v4.0

6.2

Medium

Base vector

AV:N/AC:L/AT:N/PR:H/UI:A/VC:L/VI:L/VA:N/SC:H/SI:H/SA:H

Name of the Vulnerable Software and Affected Versions Grav versions prior to 1.11.0-beta.1

Description The Grav admin plugin, an HTML user interface for configuring Grav and managing pages, contains a Stored Cross-Site Scripting (XSS) issue. The vulnerability exists in the /admin/pages/[page] endpoint, allowing attackers to inject malicious scripts through the data[header][metadata], data[header][taxonomy][category], and data[header][taxonomy][tag] parameters. These injected scripts are stored within the page frontmatter and automatically executed when the affected page is accessed or rendered within the administrative interface.

Recommendations Update to version 1.11.0-beta.1 or later.

Exploit

Fix

XSS

Weakness Enumeration

CWE-79

Related Identifiers

CVE-2025-66311

GHSA-MPJJ-4688-3FXG

Affected Products

Grav

Grav Admin Plugin

References · 7

• 🔥 https://github.com/getgrav/grav/security/advisories/GHSA-mpjj-4688-3fxg · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/66xxx/CVE-2025-66311.json · Exploit
• https://github.com/getgrav/grav-plugin-admin/commit/99f653296504f1d6408510dd2f6f20a45a26f9b0 · Patch
• https://nvd.nist.gov/vuln/detail/CVE-2025-66311 · Security Note
• https://osv.dev/vulnerability/CVE-2025-66311 · Vendor Advisory
• https://t.me/CVEtracker/38602 · Telegram Post
• https://twitter.com/CVEnew/status/1995622984049111094 · Twitter Post