Vulnerability · Published Aug 18, 2026 · Assigned by VulnCheck
CVE-2026-75837Grav before 2.0.14 Privilege Escalation via Group Access Field
Critical 9.1
In plain English
A critical-severity privilege mismanagement in grav from getgrav. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.5% (higher than 43% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Severity (CVSS 3.1)9.1Critical
Exploit odds (30 days)0.5%top 57.4% of all CVEs
Exploited in the wildNo reportsCISA SSVC: poc
Attack toolingNoneno public tooling known
Official description
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.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Packagist | getgrav/grav | 2.0.14 | GHSA-xhfv-7758-r9hx |
Affected products (as reported)
Weakness: CWE-269 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
References
- GitHub Security Advisory (GHSA-xhfv-7758-r9hx) vendor-advisory
- VulnCheck Advisory: Grav before 2.0.14 Privilege Escalation via Group Access Field third-party-advisory