CVE-2026-75837

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.

CVSS v3 9.1 CRITICAL

9.1^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 2.3 / Impact : 6.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required HIGH

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://github.com/getgrav/grav/security/advisories/GHSA-xhfv-7758-r9hx
https://www.vulncheck.com/advisories/grav-before-privilege-escalation-via-group-access-field
https://github.com/getgrav/grav/security/advisories/GHSA-xhfv-7758-r9hx

Configurations

No configuration.

History

22 Oct 2026, 22:10

Type	Values Removed	Values Added
Summary		(es) Grav anterior a la versión 2.0.14 no protege el campo de acceso en el esquema del grupo central con la restricción de seguridad requerida security@: admin.super. Un operador delegado de admin.users puede guardar un grupo con access[admin][super]=true para escalar a super-administrador, obteniendo capacidades de evaluación del programador y de Twig.

Information

Published : 2026-08-18 12:19

Updated : 2026-10-22 22:10

NVD link : CVE-2026-75837

Mitre link : CVE-2026-75837

CVE.ORG link : CVE-2026-75837

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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