CVE-2026-89060

A cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modify a managed cluster’s ManagedClusterAddOn configuration to reference ClusterLogForwarder or OpenTelemetryCollector resources outside the permitted namespace. If those resources reference...

CVE-2026-89060

Stolostron multicluster-observability-addon is affected by a cross-namespace secret disclosure flaw. A managed-cluster identity can reference configuration resources outside its designated namespace, allowing an attacker-controlled managed cluster to access sensitive hub Secrets . The CVSS 3.1 sc...

CVE-2026-89060 Stolostron/multicluster-observability-addon: cross-namespace secret disclosure in multicluster-observability-addon via unvalidated configuration references

A cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modify a managed cluster’s ManagedClusterAddOn configuration to reference ClusterLogForwarder or OpenTelemetryCollector resources outside the permitted namespace. If those resources reference...

EUVD-2026-75948

A cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modify a managed cluster’s ManagedClusterAddOn configuration to reference ClusterLogForwarder or OpenTelemetryCollector resources outside the permitted namespace. If those resources reference...

CVE-2026-89060

A cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modify a managed cluster’s ManagedClusterAddOn configuration to reference ClusterLogForwarder or OpenTelemetryCollector resources outside the permitted namespace. If those resources reference...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.6.14 security update

Red Hat multicluster engine for Kubernetes v2.6 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 scor...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.8.10 security update

Red Hat multicluster engine for Kubernetes v2.8 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 scor...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.9.7 security update

Red Hat multicluster engine for Kubernetes v2.9 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 scor...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.10.6 security update

Red Hat multicluster engine for Kubernetes v2.10 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...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.11.6 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...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.17.2 security update

Red Hat multicluster engine for Kubernetes v2.17 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...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.17.2 security update

Red Hat multicluster engine for Kubernetes v2.17 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...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.6.14 security update

Red Hat multicluster engine for Kubernetes v2.6 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 scor...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.9.7 security update

Red Hat multicluster engine for Kubernetes v2.9 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 scor...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.8.10 security update

Red Hat multicluster engine for Kubernetes v2.8 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 scor...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.10.6 security update

Red Hat multicluster engine for Kubernetes v2.10 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...

Important: Red Hat Security Advisory: multicluster engine for Kubernetes v2.11.6 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-2026-73267

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...

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 Clusterclaims-controller: managedcluster deletion keyed solely on clusterclaim.spec.namespace with no local ownership check

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...