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CVE-2026-10059

Cluster-curator-controller: cluster-curator-controller: namespace admin can escalate to cluster-wide curator authority via clustercurator serviceaccount token

Published: Aug 5, 2026Updated: Aug 6, 2026 Sources: CVE List NVDCWE-266
9.1CRITICAL
NVD MITRE
EPSS Score
0.3%
Top 80.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Workaround Only
Self-Check
Not available

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.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:HUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:HPrivileges Required
High
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-266

Affected Products

Red Hat
commercial·US
Multicluster Engine for KubernetesOn-premWeb App
Cloud & SaaS / container-orchestration

Exploitability

Workaround Available
Is your org exposed to CVE-2026-10059?We can run the check for you — a free external exposure review, no install. Check my exposure

References

https://access.redhat.com/security/cve/CVE-2026-10059
access.redhat.com
https://bugzilla.redhat.com/show_bug.cgi?id=2483187
bugzilla.redhat.com

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