by Kastro
Paper/Archive/CVE-2026-42613

CVE-2026-42613

getgrav grav — Grav: Privilege Escalation via Missing Server-Side Validation of groups/access

EPSS 1%public exploitCVSS 9.4
critical.is priorityof 100
52
CVSS 9.4 (CNA)9.4 / 10 × 3028.2Not in CISA KEV+300.0EPSS percentile 66.5.665 × 2013.3Exploit: SSVC poc+1010.0SSVC exploitation: poc+100.0
Description · from the CVE record

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

ProductAffectedFixed inSource
grav< 2.0.0-beta.2–CNA

Scores by source

GitHub_M (CNA)9.4CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:L
CISA ADPSSVCExploitation: poc · Automatable: yes · Technical impact: total

References

refgithub.com/getgrav/grav/security/advisories/GHSA-pxm6-mhxr-q4mjrefgithub.com/getgrav/grav-plugin-login/commit/3d419a0dabd70aed1fd49afcd5919004a4141da1exploitgithub.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw