CVE-2026-73267

A flaw was found in the clusterclaims-controller component of multicluster engine (MCE). A tenant with standard permissions to create and delete ClusterClaim resources can exploit this by manipulating the `spec.namespace` field. This allows the tenant to specify and delete any ManagedCluster, including the hub's local-cluster or other tenants' clusters, due to a missing ownership check. This vulnerability can lead to a denial of service by enabling unauthorized deletion of ManagedClusters.

CVSS v3 7.7 HIGH

7.7^/10

CVSS v3 : HIGH

Vector :

Exploitability : 3.1 / Impact : 4.0

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope CHANGED

References

Link	Resource
https://access.redhat.com/errata/RHSA-2026:59556
https://access.redhat.com/errata/RHSA-2026:59557
https://access.redhat.com/errata/RHSA-2026:59558
https://access.redhat.com/errata/RHSA-2026:59559
https://access.redhat.com/errata/RHSA-2026:59579
https://access.redhat.com/errata/RHSA-2026:59593
https://access.redhat.com/security/cve/CVE-2026-73267
https://bugzilla.redhat.com/show_bug.cgi?id=2514218

Configurations

No configuration.

History

26 Oct 2026, 10:10

Type	Values Removed	Values Added
Summary		(es) Se encontró una falla en el componente clusterclaims-controller de multicluster engine (MCE). Un inquilino con permisos estándar para crear y eliminar recursos ClusterClaim puede explotar esto manipulando el campo ’spec.namespace’. Esto permite al inquilino especificar y eliminar cualquier ManagedCluster, incluyendo el local-cluster del hub u otros clústeres de inquilinos, debido a una falta de verificación de propiedad. Esta vulnerabilidad puede llevar a una denegación de servicio al permitir la eliminación no autorizada de ManagedClusters.

Information

Published : 2026-08-21 03:16

Updated : 2026-10-26 10:10

NVD link : CVE-2026-73267

Mitre link : CVE-2026-73267

CVE.ORG link : CVE-2026-73267

JSON object : View

Products Affected

No product.

CWE

CWE-602

Client-Side Enforcement of Server-Side Security

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