What is CVE-2025-66296?

CVE-2025-66296 is a high-severity vulnerability in Getgrav Grav, classified under Incorrect Privilege Assignment. CVSS score: 8.8/10. Published 2025-12-01.

How severe is CVE-2025-66296?

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

Privilege escalation in Getgrav Grav

CVE-2025-66296

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, a privilege escalation vulnerability exists in Grav’s Admin plugin due to the absence of username uniqueness validation when creating users. A user with the create user permission…

EPSS: 0.001 (19.6th 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)

CWE-266 — Incorrect Privilege Assignment

References

https://github.com/getgrav/grav/security/advisories/GHSA-cjcp-qxvg-4rjm (x_refsource_CONFIRM)
https://github.com/getgrav/grav/commit/3462d94d575064601689b236508c316242e15741 (x_refsource_MISC)

Frequently asked questions

What is CVE-2025-66296?: CVE-2025-66296 is a high-severity vulnerability in Getgrav Grav, classified under Incorrect Privilege Assignment. CVSS score: 8.8/10. Published 2025-12-01.
How severe is CVE-2025-66296?: High severity. CVSS v3 base score is 8.8 out of 10.