critical9.4
CVE-2026-42613
Grav Vulnerable to Privilege Escalation via Missing Server-Side Validation of groups/access
Impact
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.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| composer | getgrav/grav | < 2.0.0-beta.2 | 2.0.0-beta.2 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/advisories/GHSA-pxm6-mhxr-q4mj
- https://github.com/getgrav/grav/security/advisories/GHSA-pxm6-mhxr-q4mj
- https://github.com/getgrav/grav-plugin-login/commit/3d419a0dabd70aed1fd49afcd5919004a4141da1
- https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw
- https://nvd.nist.gov/vuln/detail/CVE-2026-42613