What is CVE-2025-66299?

CVE-2025-66299 is a high-severity vulnerability in Getgrav Grav, classified under Code Injection. CVSS score: 8.8/10. Published 2025-12-01.

How severe is CVE-2025-66299?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Getgrav Grav

CVE-2025-66299

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, Grav CMS is vulnerable to a Server-Side Template Injection (SSTI) that allows any authenticated user with editor permissions to execute arbitrary code on the remote server, bypassi…

Vulnerability class: RCE (Remote Code Execution)

EPSS: 0.002 (35.8th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Getgrav Grav — versions < 1.8.0-beta.27

Weakness classification (CWE)

References

https://github.com/getgrav/grav/security/advisories/GHSA-gjc5-8cfh-653x (x_refsource_CONFIRM)
https://github.com/getgrav/grav/commit/e37259527d9c1deb6200f8967197a9fa587c6458 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-66299?: CVE-2025-66299 is a high-severity vulnerability in Getgrav Grav, classified under Code Injection. CVSS score: 8.8/10. Published 2025-12-01.
How severe is CVE-2025-66299?: High severity. CVSS v3 base score is 8.8 out of 10.