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2 vulnerabilities found for multicluster engine for Kubernetes 2.11.0 by Red Hat
CVE-2026-17107 (GCVE-0-2026-17107)
Vulnerability from cvelistv5
Published
2026-07-24 18:56
Modified
2026-08-25 05:12
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
Summary
A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for Kubernetes (RHACM) and multicluster-engine (MCE). The service-proxy appends impersonation group headers to proxied requests without first removing caller-supplied values, and the spoke ServiceAccount holds unrestricted impersonation permissions. An authenticated hub principal can inject an Impersonate-Group header to escalate to cluster-admin on every managed cluster.
References
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1784342329 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
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CVE-2026-4740 (GCVE-0-2026-4740)
Vulnerability from cvelistv5
Published
2026-04-07 14:30
Modified
2026-08-25 12:05
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-295 - Improper Certificate Validation
Summary
A flaw was found in Open Cluster Management (OCM), the technology underlying Red Hat Advanced Cluster Management (ACM). Improper validation of Kubernetes client certificate renewal allows a managed cluster administrator to forge a client certificate that can be approved by the OCM controller. This enables cross-cluster privilege escalation and may allow an attacker to gain control over other managed clusters, including the hub cluster.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1776881164 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
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