{"id":"CVE-2026-10059","title":"A flaw was found in the Multicluster Engine for Kubernetes ClusterCurator controller","summary":"A flaw was found in the Multicluster Engine for Kubernetes ClusterCurator controller. A tenant administrator with namespace-scoped privileges can exploit this vulnerability by creating a namespaced ClusterCurator. This action inadvertent…","severity":"critical","cvss":9.1,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H","cwe":["CWE-266"],"vendor":"Red Hat","product":"multicluster-engine/cluster-curator-controller-rhel9","affected":["multicluster-engine/cluster-curator-controller-rhel9 (all versions)","multicluster-engine/cluster-curator-controller-rhel9 (all versions)","multicluster-engine/cluster-curator-controller-rhel9 (all versions)","multicluster-engine/cluster-curator-controller-rhel9 (all versions)","multicluster-engine/cluster-curator-controller-rhel9 (all versions)"],"published":"2026-08-05","updated":"2026-09-08","sourceUpdated":"2026-09-08T13:17:16.697","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-10059","references":[{"url":"https://access.redhat.com/errata/RHSA-2026:59556","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59557","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59558","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59559","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/errata/RHSA-2026:59579","label":"secalert@redhat.com"},{"url":"https://access.redhat.com/security/cve/CVE-2026-10059","label":"secalert@redhat.com"},{"url":"https://bugzilla.redhat.com/show_bug.cgi?id=2483187","label":"secalert@redhat.com"},{"url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-10059.json"},{"url":"https://www.cve.org/CVERecord?id=CVE-2026-10059"},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2026-10059"}],"tags":["nvd","cve.org","csaf","vex","red-hat"],"ssvc":{"exploitation":"none","automatable":"no","technicalImpact":"total","timestamp":"2026-08-05T14:21:58.044319Z"},"epss":0.00342,"epssPercentile":0.27807,"ingestedAt":"2026-09-05T15:41:16.374Z","patched":["multicluster_engine_for_kubernetes 2.11","multicluster_engine_for_kubernetes 2.1","multicluster_engine_for_kubernetes 2.6","multicluster_engine_for_kubernetes 2.8","multicluster_engine_for_kubernetes 2.9"],"slug":"CVE-2026-10059","body":"## Overview\n\nA flaw was found in the Multicluster Engine for Kubernetes ClusterCurator controller. A tenant administrator with namespace-scoped privileges can exploit this vulnerability by creating a namespaced ClusterCurator. This action inadvertently grants the tenant administrator the ability to mint a token for a ServiceAccount with cluster-wide administrative authority. This leads to a privilege escalation, allowing the tenant administrator to gain full control over the cluster.\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.\n\n## Vendor advisories\n\n- **RHSA-2026:59556** · Red Hat · fixed in: multicluster engine for Kubernetes 2.11 · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59556)\n- **RHSA-2026:59557** · Red Hat · fixed in: multicluster engine for Kubernetes 2.1 · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59557)\n- **RHSA-2026:59579** · Red Hat · fixed in: multicluster engine for Kubernetes 2.6 · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59579)\n- **RHSA-2026:59558** · Red Hat · fixed in: multicluster engine for Kubernetes 2.8 · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59558)\n- **RHSA-2026:59559** · Red Hat · fixed in: multicluster engine for Kubernetes 2.9 · released 2026-08-25 · [advisory](https://access.redhat.com/errata/RHSA-2026:59559)","depth":"midnight","depthScore":50,"depthScoreParts":{"impact":50.1,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}