Privilege escalation in Getgrav Grav
CVE-2026-75837
Grav before 2.0.14 fails to guard the access field in the core group blueprint with the required security@: admin.super restriction. A delegated admin.users operator can save a group with access[admin][super]=true to escalate to super-admin, gaining scheduler and Twig evaluation capabilities.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (40.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 40.2% 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: 0.005 · change: +0.002
Affected products
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-xhfv-7758-r9hx (vendor-advisory)
- www.vulncheck.com/advisories/grav-before-privilege-escalation-via-group-access-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-75837?
- CVE-2026-75837 is a critical-severity vulnerability in Getgrav Grav, classified under Improper Privilege Management. CVSS score: 9.1/10. Published 2026-08-18.
- How severe is CVE-2026-75837?
- Critical severity. CVSS v3 base score is 9.1 out of 10.