What is CVE-2025-66306?

CVE-2025-66306 is a medium-severity vulnerability in Getgrav Grav, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2025-12-01.

How severe is CVE-2025-66306?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Auth bypass in Getgrav Grav

CVE-2025-66306

Grav is a file-based Web platform. Prior to 1.8.0-beta.27, there is an IDOR (Insecure Direct Object Reference) vulnerability in the Grav CMS Admin Panel which allows low-privilege users to access sensitive information from other accounts. Although direct account takeover is not possible, admin email addresses and other metadata can be exposed, increasing the risk of phishing, credential stuffing, and social engineering. This vulnerability is fixed in 1.8.0-beta.27.

Vulnerability class: IDOR (Insecure Direct Object Reference)

EPSS: 0.003 (18.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N.

Affected products

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

Weakness classification (CWE)

CWE-639 — Authorization Bypass Through User-Controlled Key

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-2025-66306?: CVE-2025-66306 is a medium-severity vulnerability in Getgrav Grav, classified under Authorization Bypass Through User-Controlled Key. CVSS score: 4.3/10. Published 2025-12-01.
How severe is CVE-2025-66306?: Medium severity. CVSS v3 base score is 4.3 out of 10.