CVE-2026-42613
Grav: Privilege Escalation via Missing Server-Side Validation of groups/access
CVSS Score
9.4
EPSS Score
0.1%
EPSS Percentile
17th
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.
| CWE | CWE-20 CWE-862 |
| Vendor | getgrav |
| Product | grav |
| Published | May 11, 2026 |
| Last Updated | May 12, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
Low
Affected Versions
getgrav / grav
< 2.0.0-beta.2