CVE-2026-75837CWE-269privilege-escalation

CVE-2026-75837

Critical · published August 18, 2026

CVSS v3.1
9.1
EPSS
0%
Percentile
41.5
In the wild
Unconfirmed
What it is

Grav before 2.0.14 fails to guard the access field in the core group blueprint with the required security@: admin.super restriction. A delegated admin.users operator can save a group with access[admin][super]=true to escalate to super-admin, gaining scheduler and Twig evaluation capabilities.

The record
Technical detail
CVSS v3.1
9.1 · CRITICAL
Vector
CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CVSS v4.0
9.3 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
EPSS
0.00494 · 41.5th percentile
Weakness
CWE-269 · Improper Privilege Management
Published
2026-08-18T16:19Z
References (3)
https://github.com/getgrav/grav/security/advisories/GHSA-xhfv-7758-r9hx · [email protected]https://www.vulncheck.com/advisories/grav-before-privilege-escalation-via-group-access-field · [email protected]https://github.com/getgrav/grav/security/advisories/GHSA-xhfv-7758-r9hx · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 AUG 11:19Z
    Grav before 2.0.14 Privilege Escalation via Group Access Field
    cvelistv5