Security Advisory catalog CVE-2026-73267 Historical advisory recorded 23 Oct 2026 15:48:27 UTC. Read the latest advisory .
cve-program · CVE-2026-73267 Published
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.
Read the publisher's advisory Affected versions, risk and source history
cve-program · CVE-2026-73267 Published multicluster-engine/clusterclaims-controller-rhel9 https://catalog.redhat.com/software/containers/
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.10",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/clusterclaims-controller-rhel9",
"defaultStatus": "affected",
"versions": [
{
"version": "1787196014",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.10::el9"
]
} multicluster-engine/clusterclaims-controller-rhel9 https://catalog.redhat.com/software/containers/
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.11",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/clusterclaims-controller-rhel9",
"defaultStatus": "affected",
"versions": [
{
"version": "1787239442",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.11::el9"
]
} multicluster-engine/clusterclaims-controller-rhel9 https://catalog.redhat.com/software/containers/
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.17",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/clusterclaims-controller-rhel9",
"defaultStatus": "affected",
"versions": [
{
"version": "1786577950",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.17::el9"
]
} multicluster-engine/clusterclaims-controller-rhel9 https://catalog.redhat.com/software/containers/
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.6",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/clusterclaims-controller-rhel9",
"defaultStatus": "affected",
"versions": [
{
"version": "1787259112",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.6::el9"
]
} multicluster-engine/clusterclaims-controller-rhel9 https://catalog.redhat.com/software/containers/
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.8",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/clusterclaims-controller-rhel9",
"defaultStatus": "affected",
"versions": [
{
"version": "1787259059",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.8::el9"
]
} multicluster-engine/clusterclaims-controller-rhel9 https://catalog.redhat.com/software/containers/
Publisher's version information Shown as published. These rules are not interpreted as NuGet package version ranges.
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.9",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/clusterclaims-controller-rhel9",
"defaultStatus": "affected",
"versions": [
{
"version": "1787195995",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
],
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.9::el9"
]
} Original source record · Cite this exact observation · Complete original publisher JSON