CVE-2026-72534

A privilege escalation vulnerability in Authentik Security authentik through 2026.5.6 allows an attacker with a source-scoped SCIM provisioning token to gain superuser privileges by provisioning a SCIM group that matches an existing administrator group by name. The SCIM group ingest function adopts any existing group by name and replaces its membership without validating the source scope against the target group. An attacker can grant their provisioning token full IdP superuser access and lock out all existing administrators.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/goauthentik/authentik

Configurations

No configuration.

History

23 Oct 2026, 19:10

Type	Values Removed	Values Added
Summary		(es) Una vulnerabilidad de escalada de privilegios en Authentik Security authentik hasta 2026.5.6 permite a un atacante con un token de aprovisionamiento SCIM con ámbito de origen obtener privilegios de superusuario al aprovisionar un grupo SCIM que coincide con un grupo de administradores existente por nombre. La función de ingesta de grupos SCIM adopta cualquier grupo existente por nombre y reemplaza su membresía sin validar el ámbito de origen contra el grupo de destino. Un atacante puede otorgar a su token de aprovisionamiento acceso completo de superusuario de IdP y bloquear a todos los administradores existentes.

Information

Published : 2026-08-11 12:17

Updated : 2026-10-24 15:10

NVD link : CVE-2026-72534

Mitre link : CVE-2026-72534

CVE.ORG link : CVE-2026-72534

JSON object : View

Products Affected

No product.

CWE

CWE-269

Improper Privilege Management

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