Auth bypass in Getgrav Grav
CVE-2026-42613
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.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.009 (58.5th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 9.4 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L.
Affected products
- Getgrav Grav — versions < 2.0.0-beta.2
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM)
- security-advisories@github.com (x_refsource_MISC)
- 134c704f-9b21-4f2e-91b3-4a467353bcc0
Frequently asked questions
- What is CVE-2026-42613?
- CVE-2026-42613 is a critical-severity vulnerability in Getgrav Grav, classified under Improper Input Validation. CVSS score: 9.4/10. Published 2026-05-11.
- How severe is CVE-2026-42613?
- Critical severity. CVSS v3 base score is 9.4 out of 10.