{"id":"CVE-2026-73267","url":"https://www.cyber-defence.io/tools/cve/CVE-2026-73267","generatedAt":"2026-10-28T02:14:13.251Z","title":"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.","description":"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.","published":"2026-08-21T03:16:39.000Z","lastModified":"2026-10-26T10:10:00.000Z","status":"Awaiting Analysis","sourceIdentifier":"secalert@redhat.com","cvss":{"version":"3.1","score":7.7,"severity":"HIGH","vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:N/A:H"},"cwe":["CWE-602"],"affected":[],"epss":{"score":0.00626,"percentile":0.49732,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"high","text":"High impact if exploited, but EPSS currently rates exploitation as unlikely (0.63%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit."},"changes":[],"references":[{"url":"https://access.redhat.com/errata/RHSA-2026:59556","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59557","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59558","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59559","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59579","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59593","source":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-73267","source":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2514218","source":"secalert@redhat.com"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2026-73267","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}