CVE-2026-73269
Full vulnerability record from the local CVENow database.
Description
A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools.
Severity
CRITICAL
CVSS score
9.9
(v3.1)
Vulnerability status
Awaiting Analysis
Source identifier
Published
2026-08-12 20:17:53.793000
Last modified
2026-10-24 15:10:00.190000
View original CVE JSON
{
"id": "CVE-2026-73269",
"sourceIdentifier": "[email protected]",
"published": "2026-08-12T20:17:53.793",
"lastModified": "2026-10-24T15:10:00.190",
"vulnStatus": "Awaiting Analysis",
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools."
},
{
"lang": "es",
"value": "Se encontró una vulnerabilidad en el componente cluster-curator-controller. Un usuario local, al crear un recurso ClusterCurator con una convención de nomenclatura específica, puede desencadenar la creación de un ClusterRoleBinding con ámbito de clúster. Esto permite al usuario escalar sus privilegios de acceso local a nivel de espacio de nombres a control a nivel de clúster. Esta escalada de privilegios otorga permisos amplios, incluyendo la capacidad de acceder y manipular secretos, gestionar acciones del clúster y eliminar clústeres alojados o grupos de nodos."
}
],
"affected": [
{
"source": "[email protected]",
"affectedData": [
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.10",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/cluster-curator-controller-rhel9",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.10::el9"
],
"versions": [
{
"version": "1787201612",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.11",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/cluster-curator-controller-rhel9",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.11::el9"
],
"versions": [
{
"version": "1787238383",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.17",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/cluster-curator-controller-rhel9",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.17::el9"
],
"versions": [
{
"version": "1786750700",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.6",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/cluster-curator-controller-rhel9",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.6::el9"
],
"versions": [
{
"version": "1787264185",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.8",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/cluster-curator-controller-rhel9",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.8::el9"
],
"versions": [
{
"version": "1787259011",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
},
{
"vendor": "Red Hat",
"product": "multicluster engine for Kubernetes 2.9",
"defaultStatus": "affected",
"collectionURL": "https://catalog.redhat.com/software/containers/",
"packageName": "multicluster-engine/cluster-curator-controller-rhel9",
"cpes": [
"cpe:/a:redhat:multicluster_engine:2.9::el9"
],
"versions": [
{
"version": "1787201646",
"lessThan": "*",
"versionType": "rpm",
"status": "unaffected"
}
]
}
]
}
],
"metrics": {
"cvssMetricV31": [
{
"source": "[email protected]",
"type": "Secondary",
"cvssData": {
"version": "3.1",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H",
"baseScore": 9.9,
"baseSeverity": "CRITICAL",
"attackVector": "NETWORK",
"attackComplexity": "LOW",
"privilegesRequired": "LOW",
"userInteraction": "NONE",
"scope": "CHANGED",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"availabilityImpact": "HIGH"
},
"exploitabilityScore": 3.1,
"impactScore": 6.0
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"timestamp": "2026-08-12T20:47:02.826289Z",
"id": "CVE-2026-73269",
"options": [
{
"exploitation": "none"
},
{
"automatable": "no"
},
{
"technicalImpact": "total"
}
],
"role": "CISA Coordinator",
"version": "2.0.3"
}
}
]
},
"weaknesses": [
{
"source": "[email protected]",
"type": "Secondary",
"description": [
{
"lang": "en",
"value": "CWE-269"
}
]
}
],
"references": [
{
"url": "https://access.redhat.com/errata/RHSA-2026:59556",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:59557",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:59558",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:59559",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:59579",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/errata/RHSA-2026:59593",
"source": "[email protected]"
},
{
"url": "https://access.redhat.com/security/cve/CVE-2026-73269",
"source": "[email protected]"
},
{
"url": "https://bugzilla.redhat.com/show_bug.cgi?id=2514220",
"source": "[email protected]"
}
]
}