{ "dataType": "CVE_RECORD", "dataVersion": "5.2", "cveMetadata": { "cveId": "CVE-2026-73269", "assignerOrgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "state": "PUBLISHED", "assignerShortName": "redhat", "dateReserved": "2026-08-11T17:22:38.645Z", "datePublished": "2026-08-12T19:05:05.235Z", "dateUpdated": "2026-08-12T20:55:28.504Z" }, "containers": { "cna": { "title": "Cluster-curator-controller: cluster-curator-controller: tenant-controllable trigger creates clusterrolebinding granting cluster-wide secrets access to namespace-local sa", "metrics": [ { "other": { "content": { "value": "Important", "namespace": "https://access.redhat.com/security/updates/classification/" }, "type": "Red Hat severity rating" } }, { "cvssV3_1": { "attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1" }, "format": "CVSS" } ], "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." } ], "affected": [ { "vendor": "Red Hat", "product": "Multicluster Engine for Kubernetes", "collectionURL": "https://access.redhat.com/downloads/content/package-browser/", "packageName": "multicluster-engine/cluster-curator-controller-rhel9", "defaultStatus": "affected", "cpes": [ "cpe:/a:redhat:multicluster_engine" ] } ], "references": [ { "url": "https://access.redhat.com/security/cve/CVE-2026-73269", "tags": [ "vdb-entry", "x_refsource_REDHAT" ] }, { "url": "https://bugzilla.redhat.com/show_bug.cgi?id=2514220", "name": "RHBZ#2514220", "tags": [ "issue-tracking", "x_refsource_REDHAT" ] } ], "datePublic": "2026-08-11T00:00:00.000Z", "problemTypes": [ { "descriptions": [ { "cweId": "CWE-269", "description": "Improper Privilege Management", "lang": "en", "type": "CWE" } ] } ], "x_redhatCweChain": "CWE-269: Improper Privilege Management", "workarounds": [ { "lang": "en", "value": "To mitigate this issue, restrict the ability of tenants to create `ClusterCurator` resources. Implement Kubernetes Role-Based Access Control (RBAC) policies to limit `create` permissions for `clustercurators.cluster.open-cluster-management.io` resources to only trusted administrators or service accounts. Alternatively, deploy an admission controller to enforce that `metadata.name` and `metadata.namespace` fields are identical when `ClusterCurator` resources are created, preventing the vulnerable condition." } ], "timeline": [ { "lang": "en", "time": "2026-08-10T00:00:00.000Z", "value": "Reported to Red Hat." }, { "lang": "en", "time": "2026-08-11T00:00:00.000Z", "value": "Made public." } ], "providerMetadata": { "orgId": "53f830b8-0a3f-465b-8143-3b8a9948e749", "shortName": "redhat", "dateUpdated": "2026-08-12T19:05:05.235Z" }, "x_generator": { "engine": "cvelib 1.8.0" } }, "adp": [ { "metrics": [ { "other": { "type": "ssvc", "content": { "timestamp": "2026-08-12T20:47:02.826289Z", "id": "CVE-2026-73269", "options": [ { "Exploitation": "none" }, { "Automatable": "no" }, { "Technical Impact": "total" } ], "role": "CISA Coordinator", "version": "2.0.3" } } } ], "title": "CISA ADP Vulnrichment", "providerMetadata": { "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "shortName": "CISA-ADP", "dateUpdated": "2026-08-12T20:55:28.504Z" } } ] } }