What is CVE-2025-66298?

CVE-2025-66298 is a high-severity vulnerability in Getgrav Grav, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 7.5/10. Published 2025-12-01.

How severe is CVE-2025-66298?

High severity. CVSS v3 base score is 7.5 out of 10.

Vulnerability in Getgrav Grav

CVE-2025-66298

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, having a simple form on site can reveal the whole Grav configuration details (including plugin configuration details) by using the correct POST payload to exploit a Server-Side Template (SST) vulnerability. Sensitive information may be contained in the configuration details. This vulnerability is fixed in 1.8.0-beta.27.

EPSS: 0.003 (26.3th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N.

Affected products

Getgrav Grav — versions 1.8.0, < 1.8.0-beta.27

Weakness classification (CWE)

CWE-1336 — Improper Neutralization of Special Elements Used in a Template Engine

References

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

Frequently asked questions

What is CVE-2025-66298?: CVE-2025-66298 is a high-severity vulnerability in Getgrav Grav, classified under Improper Neutralization of Special Elements Used in a Template Engine. CVSS score: 7.5/10. Published 2025-12-01.
How severe is CVE-2025-66298?: High severity. CVSS v3 base score is 7.5 out of 10.