Reference page — cumulative record through Sunday, October 4, 2026 UTC. Reference pages update as the archive grows; only dated daily editions are immutable pages of record.
CVE-2026-10059
Red Hat multicluster engine for Kubernetes 2.1 — Cluster-curator-controller: cluster-curator-controller: namespace admin can escalate to cluster-wide curator authority via clustercurator serviceaccount token
AV AC PR UI S C I A CVSS EPSS %ile KEV
N L H N C H H H 9.1 .0064 48.8 —
AFFECTED
Product Versions Fixed
multicluster engine for Kubernetes 2.1 unspecified 1787201612
multicluster engine for Kubernetes 2.11 unspecified 1787238383
multicluster engine for Kubernetes 2.6 unspecified 1787264185
multicluster engine for Kubernetes 2.8 unspecified 1787259011
multicluster engine for Kubernetes 2.9 unspecified 1787201646
TIMELINE
May 29 Reserved by redhat
Aug 5 Published (CNA: redhat)
Aug 25 PATCH SHIPPED — CVE-2026-10059 (Red Hat multicluster engine for Kubernetes 2.10). Fixed in multicluster engine for Kubernetes 2.10 1787201612.
Description
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 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.
Lifecycle
Complete event history — 3 events, chronological
| Date | Event | Detail |
|---|
| May 29, 2026 | Reserved | Reserved by redhat |
| August 5, 2026 | Published | Published (CNA: redhat) |
| August 25, 2026 | PATCH SHIPPED | PATCH SHIPPED — CVE-2026-10059 (Red Hat multicluster engine for Kubernetes 2.10). Fixed in multicluster engine for Kubernetes 2.10 1787201612. |
Affected
Affected products and packages — 5 rows
| Vendor | Product / Package | Ecosystem | Version introduced | Fixed |
|---|
| Red Hat | multicluster engine for Kubernetes 2.1 | — | — | 1787201612 |
| Red Hat | multicluster engine for Kubernetes 2.11 | — | — | 1787238383 |
| Red Hat | multicluster engine for Kubernetes 2.6 | — | — | 1787264185 |
| Red Hat | multicluster engine for Kubernetes 2.8 | — | — | 1787259011 |
| Red Hat | multicluster engine for Kubernetes 2.9 | — | — | 1787201646 |
About this page
This is a reference page, not a dated page of record. It assembles the complete lifecycle of CVE-2026-10059 from the CVE Program record, NVD enrichment, the CISA KEV catalog, EPSS, and OSV advisories. The box score's numbers (CVSS, EPSS, KEV status) are current as of Sunday, October 4, 2026 UTC and are re-derived as the archive grows; only dated daily editions are immutable pages of record. The authoritative source for this identifier is cve.org.
