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CVE-2026-73266

nvd nist
Published: Aug 13, 2026Modified: Sep 7, 2026

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7.1
Vector
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:L/A:N
Exploitability: 1.8 / Impact: 4.7
Source: secalert@redhat.com (Secondary)

Description

A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tenant can exploit this vulnerability by manipulating ClusterClaim labels. This allows the tenant to force a cluster to join a ManagedClusterSet belonging to another tenant. Such unauthorized access could enable the injection of policies and workloads into other tenants' clusters.

Related CWEs

CWE-441
Unintended Proxy or Intermediary ('Confused Deputy')
The product receives a request, message, or directive from an upstream component, but the product does not sufficiently preserve the original source of the request before forwarding the request to an external actor that is outside of the product's control sphere. This causes the product to appear to be the source of the request, leading it to act as a proxy or other intermediary between the upstream component and the external actor.

References (8)

Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com
Source: secalert@redhat.com

Timeline

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