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CVE-2026-10059

CRITICALCVSS 9.1/10EPSS 0.34%

Last modified

CVE-2026-10059 is a critical-severity vulnerability rated 9.1/10 on the CVSS scale. 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. EPSS estimates a 0.34% chance of exploitation in the next 30 days.

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.

Metrics

CVSS 3.1
9.1/10

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

EPSS Probability
0.34%

27.1th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Source: CNA advisory (CVE.org). NVD analysis pending.

VendorProductVersions
Red Hatmulticluster engine for Kubernetes 2.1All versions
Red Hatmulticluster engine for Kubernetes 2.11All versions
Red Hatmulticluster engine for Kubernetes 2.6All versions
Red Hatmulticluster engine for Kubernetes 2.8All versions
Red Hatmulticluster engine for Kubernetes 2.9All versions

References

Timeline

Published
Last Modified
Status
Awaiting Analysis

Frequently Asked Questions

What is CVE-2026-10059?
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.
How severe is CVE-2026-10059?
CVE-2026-10059 has a CVSS score of 9.1/10 (CRITICAL severity). The EPSS model estimates a 0.34% probability of exploitation in the next 30 days.
How do I fix CVE-2026-10059?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

How Strix Helps

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Source: NVD / NIST