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CVE-2025-66311

18
FAUCET Score

CVE-2025-66311 describes a Stored Cross-Site Scripting (XSS) vulnerability in the Grav admin plugin, affecting versions prior to 1.11.0-beta.1. This flaw allows authenticated attackers to inject malicious scripts into page metadata, categories, and tags, which execute when the affected page is viewed in the administrative interface. Rated as Medium severity (CVSS 5.4), it requires low privileges and user interaction, potentially leading to limited impact on confidentiality and integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability.

Impacted Technologies

VendorProductVersion(s)CPE
<= 1.10.50CPE matchmatch criteria
cpe:2.3:a:getgrav:grav-plugin-admin:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.2MEDIUM

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:X/V:X/RE:X/U:X

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
NONE
Privileges Required
HIGH
User Interaction
ACTIVE
VS Confidentiality
LOW
VS Integrity
LOW
VS Availability
NONE
SS Confidentiality
HIGH
SS Integrity
HIGH
SS Availability
HIGH
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.19%
Probability of exploitation in next 30 days
EPSS Percentile
8.5%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0019 is in the 7th percentile among its peer group of 15,239 CVEs.

Social Chatter

No social media mentions found for this CVE.

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.0 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

No media coverage found for this CVE.

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

composerpatch availablevia ghsa
Product: getgrav/gravFixed in: 1.11.0-beta.1
github_advisorypatch availablevia nvd_reference
View patch

Vendor Advisories (1)

composerGHSA-mpjj-4688-3fxgmedium

Grav vulnerable to Cross-Site Scripting (XSS) Stored endpoint `/admin/pages/[page]` in Multiples parameters

Dec 2, 2025

References

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