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CVE PROGRAM SOURCE RECORD9.3 Critical

CVE-2026-66794

Cluster-proxy-addon: cluster-proxy-addon: unauthenticated ssrf to arbitrary managed-cluster services via public route

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Status
Published
Published
Updated
Assigning organization
redhat

Description

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.

Affected products

Version statuses are supplied by the assigning organization. Consult the original record for detailed ranges and platform conditions.

Red Hat multicluster engine for Kubernetes 2.10

Default version status: affected

  • 1787173361 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.11

Default version status: affected

  • 1787276784 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.17

Default version status: affected

  • 1786983349 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.6

Default version status: affected

  • 1787275318 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.8

Default version status: affected

  • 1787275519 to < *unaffected

Red Hat multicluster engine for Kubernetes 2.9

Default version status: affected

  • 1787274923 to < *unaffected

References