Privilege escalation in Getgrav Grav
CVE-2026-72828
Grav Plugin API (getgrav/grav-plugin-api) before 1.0.13 fails to enforce API-key scope caps in InvitationsController. The strip-super and accept-groups decisions are gated on a bare isSuperAdmin() check rather than a scope-aware permission check, so a least-privilege API key (scoped to api.users.write) minted on a super account can create an invitation record containing super-admin access flags. When the invitation is accepted, those flags are written verbatim to the new account, resulting in privilege escalation to a fully controlled super account.
Vulnerability class: Privilege Escalation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.005 (39.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 40th percentile — 39.7% 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, 1.0.13
Weakness classification (CWE)
References
- github.com/getgrav/grav/security/advisories/GHSA-wvpj-fg8h-843q (vendor-advisory)
- www.vulncheck.com/advisories/grav-before-api-key-scope-bypass-via-invitationsco… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-72828?
- CVE-2026-72828 is a high-severity vulnerability in Getgrav Grav, classified under Improper Privilege Management. CVSS score: 7.2/10. Published 2026-08-14.
- How severe is CVE-2026-72828?
- High severity. CVSS v3 base score is 7.2 out of 10.