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)
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.003 (19.8th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 20th percentile — 19.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: 0.000
Affected products
- Getgrav Grav — versions 1.8.0, < 1.8.0-beta.27
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-4cwq-j7jv-qmwg (Exploit, Vendor Advisory)
- github.com/getgrav/grav/commit/b7e1958a6e807ac14919447b60e5204a2ea77f62 (Patch)
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.