Privilege escalation in Getgrav Grav
CVE-2026-65897
Grav API Plugin versions before 1.0.10 fail to validate the groups field in InvitationsController::create(), allowing authenticated api.users.write callers to assign invited accounts to groups that grant api.super permissions. Attackers can create invitation records with elevated group membership, and when accepted, the new account gains full super-admin API access without the inviter holding those permissions.
Vulnerability class: Privilege Escalation
EPSS: 0.005 (42.4th percentile) — read the EPSS interpretation.
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.
Affected products
- Getgrav Grav — versions 0, 1.0.10
Weakness classification (CWE)
References
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (patch)
- disclosure@vulncheck.com (vendor-advisory)
- disclosure@vulncheck.com (third-party-advisory)
- disclosure@vulncheck.com (patch)
Frequently asked questions
- What is CVE-2026-65897?
- CVE-2026-65897 is a high-severity vulnerability in Getgrav Grav, classified under Improper Privilege Management. CVSS score: 8.8/10. Published 2026-07-23.
- How severe is CVE-2026-65897?
- High severity. CVSS v3 base score is 8.8 out of 10.