EUVD-2026-63800

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, includi...

CVE-2026-73267

In Red Hat's multicluster engine, the clusterclaims-controller deletes ManagedClusters based solely on clusterclaim.spec.namespace without verifying ownership. Any tenant with standard ClusterClaim permissions can delete any cluster, including the hub's local-cluster, causing a HIGH-severity (7.7...

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, includi...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.11.5 security update

Red Hat multicluster engine for Kubernetes v2.11 general availability release images, which provide security fixes, bug fixes, and updated container images. Red Hat Product Security has rated this update as having a security impact of Important. A Common Vulnerability Scoring System CVSS base...

CVE-2026-66794

A flaw was found in the cluster-proxy-addon component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy...

EUVD-2026-62598

A flaw was found in the cluster-proxy-addon component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy...

CVE-2026-66794

A flaw was found in the cluster-proxy-addon component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy...

PT-2026-78547

A flaw was found in the cluster-proxy-addon component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy...

CVE-2026-73266

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...

CVE-2026-73266 Clusterclaims-controller: clusterclaims-controller: tenant-controlled clusterclaim labels propagated to managedcluster enabling cross-tenant managedclusterset join

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...

CVE-2026-73266

CVE-2026-73266 affects the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tenant can manipulate ClusterClaim labels to force a cluster to join a ManagedClusterSet owned by another tenant, enabling cross-tenant access and the potential injection of policies and w...

EUVD-2026-58132

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...

CVE-2026-73266

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...

PT-2026-71706

Name of the Vulnerable Software and Affected Versions Multicluster Engine affected versions not specified Description A flaw in the clusterclaims-controller component allows an authenticated tenant to manipulate ClusterClaim labels. This manipulation enables a tenant to force a cluster to join a...

CVE-2026-19130

A flaw was found in the provider-credential-controller component of multicluster-engine MCE. An attacker with specific permissions on the hub cluster, and knowledge of a prior credential value, could exploit an authorization bypass vulnerability. By manipulating copiedFrom labels, the attacker...

EUVD-2026-57616

A flaw was found in the provider-credential-controller component of multicluster-engine MCE. An attacker with specific permissions on the hub cluster, and knowledge of a prior credential value, could exploit an authorization bypass vulnerability. By manipulating copiedFrom labels, the attacker...

CVE-2026-19130

The CVE-2026-19130 affects the provider-credential-controller component of multicluster-engine (MCE). The root cause is an authorization bypass that can be triggered by an attacker with specific hub-cluster permissions who knows a prior credential value, by manipulating copiedFrom labels. This co...

CVE-2026-19130 Provider-credential-controller: provider-credential-controller: cross-namespace credential propagation via attacker-controlled copiedfrom labels bypasses authorization

A flaw was found in the provider-credential-controller component of multicluster-engine MCE. An attacker with specific permissions on the hub cluster, and knowledge of a prior credential value, could exploit an authorization bypass vulnerability. By manipulating copiedFrom labels, the attacker...

CVE-2026-19130

A flaw was found in the provider-credential-controller component of multicluster-engine MCE. An attacker with specific permissions on the hub cluster, and knowledge of a prior credential value, could exploit an authorization bypass vulnerability. By manipulating copiedFrom labels, the attacker...

CVE-2026-73268

A flaw was found in the cluster-curator-controller component of multicluster engine MCE. A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob function does not validate user-controlled input when...