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10 vulnerabilities found for multicluster engine for Kubernetes 2.17 by Red Hat
CVE-2026-73267 (GCVE-0-2026-73267)
Vulnerability from cvelistv5
Published
2026-08-21 02:43
Modified
2026-08-26 04:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-602 - Client-Side Enforcement of Server-Side Security
Summary
A flaw was found in the clusterclaims-controller component of multicluster engine (MCE). A tenant with standard permissions to create and delete ClusterClaim resources can exploit this by manipulating the `spec.namespace` field. This allows the tenant to specify and delete any ManagedCluster, including the hub's local-cluster or other tenants' clusters, due to a missing ownership check. This vulnerability can lead to a denial of service by enabling unauthorized deletion of ManagedClusters.
References
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787196014 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
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CVE-2026-75569 (GCVE-0-2026-75569)
Vulnerability from cvelistv5
Published
2026-08-19 20:47
Modified
2026-08-26 04:17
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-829 - Inclusion of Functionality from Untrusted Control Sphere
Summary
A flaw was found in mce-operator-bundle. The build process fetches and executes scripts from a remote repository without performing integrity checks, such as commit pinning or signature verification. This allows a malicious actor with write access to the remote repository to inject and execute arbitrary code during the build. The consequence is a compromised build process, potentially leading to the distribution of malicious software.
References
| URL | Tags | |||||||||||||||||||||||||
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787263075 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
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CVE-2026-66794 (GCVE-0-2026-66794)
Vulnerability from cvelistv5
Published
2026-08-19 17:30
Modified
2026-08-26 04:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-918 - Server-Side Request Forgery (SSRF)
Summary
A flaw was found in the `cluster-proxy-addon` component of Multicluster Engine for Kubernetes. This vulnerability allows an unauthenticated attacker, who can access the user-facing route, to bypass authentication and authorization checks. By manipulating URL path segments, the attacker can proxy requests to arbitrary services across any managed cluster. This enables unauthorized access to internal services that would otherwise be protected, potentially leading to information disclosure or further compromise of the cluster environment.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787173361 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
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|
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CVE-2026-66795 (GCVE-0-2026-66795)
Vulnerability from cvelistv5
Published
2026-08-17 20:45
Modified
2026-08-26 04:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-295 - Improper Certificate Validation
Summary
A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR) auto-approval logic improperly validates incoming CSRs, specifically by not inspecting the signer name or decoding the PEM-encoded x509 CSR. This vulnerability allows a privileged service account on a spoke cluster to submit a malicious CSR. Successful exploitation can lead to privilege escalation, enabling the attacker to obtain administrative credentials on the hub cluster.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787078272 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
|||||||||||||||||||||||||||
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CVE-2026-73266 (GCVE-0-2026-73266)
Vulnerability from cvelistv5
Published
2026-08-13 16:36
Modified
2026-08-26 04:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-441 - Unintended Proxy or Intermediary ('Confused Deputy')
Summary
A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tenant can exploit this vulnerability by manipulating ClusterClaim labels. This allows the tenant to force a cluster to join a ManagedClusterSet belonging to another tenant. Such unauthorized access could enable the injection of policies and workloads into other tenants' clusters.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
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Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787196014 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
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|
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CVE-2026-19130 (GCVE-0-2026-19130)
Vulnerability from cvelistv5
Published
2026-08-12 20:46
Modified
2026-08-26 04:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-639 - Authorization Bypass Through User-Controlled Key
Summary
A flaw was found in the provider-credential-controller component of multicluster-engine (MCE). An attacker with specific permissions on the hub cluster, and knowledge of a prior credential value, could exploit an authorization bypass vulnerability. By manipulating `copiedFrom` labels, the attacker could intercept newly rotated provider credentials, leading to unauthorized information disclosure. This allows access to sensitive credentials that should otherwise be protected.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787176886 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
|||||||||||||||||||||||||||
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CVE-2026-73268 (GCVE-0-2026-73268)
Vulnerability from cvelistv5
Published
2026-08-12 19:05
Modified
2026-08-26 04:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-94 - Improper Control of Generation of Code ('Code Injection')
Summary
A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when unmarshaling the spec.install.overrideJob raw extension. Successful exploitation allows the injected Job to run with the controller's elevated privileges, leading to arbitrary code execution and privilege escalation, potentially accessing cluster-wide secrets.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787201612 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
|||||||||||||||||||||||||||
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CVE-2026-73269 (GCVE-0-2026-73269)
Vulnerability from cvelistv5
Published
2026-08-12 19:05
Modified
2026-08-26 04:19
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-269 - Improper Privilege Management
Summary
A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools.
References
| URL | Tags | |||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
||||||||||||||||||||||||||
Impacted products
| Vendor | Product | Version | |||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1787201612 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
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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
| URL | Tags | ||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
|||||||||||||||||||||||||||||
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-2026-16242 (GCVE-0-2026-16242)
Vulnerability from cvelistv5
Published
2026-07-20 07:33
Modified
2026-08-26 16:18
Severity ?
VLAI Severity ?
EPSS score ?
CWE
- CWE-306 - Missing Authentication for Critical Function
Summary
A flaw was found in the Konnectivity proxy-server configuration for hosted control planes. The agent-facing listener was started without --cluster-ca-cert (and without token-based agent authentication), so client certificates were not validated. A remote attacker who can reach the Konnectivity cluster endpoint could connect as an unauthenticated agent, join the routing pool, and potentially proxy, inspect, modify, or drop control-plane-to-node traffic.
References
Impacted products
| Vendor | Product | Version | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Red Hat | multicluster engine for Kubernetes 2.10 |
Unaffected: 1784905766 < * cpe:/a:redhat:multicluster_engine:2.10::el9 |
||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
|
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