What is CVE-2025-66311?

CVE-2025-66311 is a medium-severity vulnerability in Getgrav Grav, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-12-01.

How severe is CVE-2025-66311?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Getgrav Grav

CVE-2025-66311

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 /admi…

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.002 (8.5th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Getgrav Grav — versions < 1.11.0-beta.1
Getgrav Grav-plugin-admin

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
security-advisories@github.com (Patch, x_refsource_MISC)

Frequently asked questions

What is CVE-2025-66311?: CVE-2025-66311 is a medium-severity vulnerability in Getgrav Grav, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2025-12-01.
How severe is CVE-2025-66311?: Medium severity. CVSS v3 base score is 5.4 out of 10.