CVE-2026-10059
Cluster-curator-controller: cluster-curator-controller: namespace admin can escalate to cluster-wide curator authority via clustercurator serviceaccount token
- State
- Published
- Severity
- 9.1 Critical
- Published
- Aug 5, 2026
- Updated
- Sep 8, 2026
- Reserved
- May 29, 2026
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 9.1 Critical | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H | redhat |
Weaknesses
- CWE-266 Incorrect Privilege Assignment
Affected Products
| Product | Versions |
|---|---|
multicluster engine for Kubernetes 2.1Red Hat |
|
multicluster engine for Kubernetes 2.11Red Hat |
|
multicluster engine for Kubernetes 2.6Red Hat |
|
multicluster engine for Kubernetes 2.8Red Hat |
|
multicluster engine for Kubernetes 2.9Red Hat |
|
References
- RHSA-2026:59556vendor-advisory
- RHSA-2026:59557vendor-advisory
- RHSA-2026:59558vendor-advisory
- RHSA-2026:59559vendor-advisory
- RHSA-2026:59579vendor-advisory
- https://access.redhat.com/security/cve/CVE-2026-10059vdb-entry
- RHBZ#2483187issue-tracking
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