Privilege escalation in Getgrav Grav
CVE-2026-72833
The Grav API plugin (getgrav/grav-plugin-api) versions >= 1.0.6 and <= 1.0.11 contain a privilege escalation vulnerability. A scoped API key minted on a super-admin account bypasses its declared scope cap on four isSuperAdmin()-gated write endpoints (in GroupsController, AccountsConfigController, PreferencesController, and DashboardWidgetController). These endpoints authorize via a super-admin early-return that never invokes requirePermission()—the sole enforcement point of the scope cap—so a 'read-only'-scoped key (e.g. api.pages.read) can perform super-only write operations, including rewriting group ACL maps to grant super-admin privileges to arbitrary accounts. A leaked or delegated read-only CI/monitoring key can therefore gain full super-admin write capability. Fixed in 1.0.13.
Vulnerability class: Privilege Escalation
Published · last modified .
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.
EPSS exploit prediction
EPSS: 0.005 (38.1th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 38th percentile — 38.1% 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
- Getgrav Grav — versions 0
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-jqgq-v53x-x99g (vendor-advisory)
- www.vulncheck.com/advisories/grav-through-privilege-escalation-via-scoped-api-k… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-72833?
- CVE-2026-72833 is a high-severity vulnerability in Getgrav Grav, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-08-14.
- How severe is CVE-2026-72833?
- High severity. CVSS v3 base score is 8.8 out of 10.