CVE-2026-42613
Grav: Privilege Escalation via Missing Server-Side Validation of groups/access
- State
- Published
- Severity
- 9.4 Critical
- Published
- May 11, 2026
- Updated
- May 12, 2026
- Reserved
- Apr 29, 2026
Description
Grav is a file-based Web platform. Prior to 2.0.0-beta.2, the Login::register() method in the Login plugin accepts attacker-controlled groups and access fields from the registration POST data without server-side validation. When registration is enabled and groups or access are included in the configured allowed fields list, an unauthenticated user can self-register with admin.super privileges by injecting these fields into the registration request. This vulnerability is fixed in 2.0.0-beta.2.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.4 Critical | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L | GitHub_M |
Weaknesses
Affected Products
| Product | Versions |
|---|---|
gravgetgrav |
|
References
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