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1 vulnerability found for multicluster engine for Kubernetes 2.11 by Red Hat

CVE-2026-7163 (GCVE-0-2026-7163)
Vulnerability from cvelistv5
Published
2026-04-30 13:18
Modified
2026-05-19 08:09
CWE
  • CWE-312 - Cleartext Storage of Sensitive Information
Summary
A vulnerability in the assisted-service REST API, an optional Assisted Installer (assisted-service) component in the Multicluster Engine (MCE), allows an authenticated user with minimal namespace-scoped privileges to obtain administrative credentials for arbitrary clusters provisioned through the hub. The credentials download endpoint (GET /v2/clusters/{cluster_id}/credentials, which returns the kubeadmin password) and the kubeconfig download endpoint are operational in AUTH_TYPE=local mode, the only authentication mode available in on-premises ACM/MCE hub deployments. The local authenticator unconditionally grants full administrative access to any request bearing a valid JWT, with no per-endpoint restrictions. A valid local JWT is embedded as a plaintext query parameter in InfraEnvStatus.ISODownloadURL and is readable by any user who has get rights on an InfraEnv object in their own namespace. The affected components ship as part of Multicluster Engine (MCE). The Red Hat Advanced Cluster Management (ACM) deployments that include MCE are equally affected. This issue does not affect the hosted SaaS offering (console.redhat.com), which uses a different authentication mode. Successful exploitation gives the attacker the kubeadmin password and kubeconfig for any OpenShift cluster provisioned through the affected hub, granting unrestricted root-level administrative access to those spoke clusters.
References
https://access.redhat.com/errata/RHSA-2026:11511 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11512 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:12116 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:12337 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:18584 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:18585 vendor-advisory, x_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-7163 vdb-entry, x_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2463152 issue-tracking, x_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat multicluster engine for Kubernetes 2.10 Unaffected: 1776983527   < *
    cpe:/a:redhat:multicluster_engine:2.10::el9
Create a notification for this product.
   Red Hat multicluster engine for Kubernetes 2.11 Unaffected: 1776987609   < *
    cpe:/a:redhat:multicluster_engine:2.11::el9
Create a notification for this product.
   Red Hat multicluster engine for Kubernetes 2.7 Unaffected: 1777205801   < *
    cpe:/a:redhat:multicluster_engine:2.7::el8
Create a notification for this product.
   Red Hat multicluster engine for Kubernetes 2.7 Unaffected: 1777205772   < *
    cpe:/a:redhat:multicluster_engine:2.7::el9
Create a notification for this product.
   Red Hat multicluster engine for Kubernetes 2.9 Unaffected: 1778464111   < *
    cpe:/a:redhat:multicluster_engine:2.9::el8
Create a notification for this product.
   Red Hat multicluster engine for Kubernetes 2.9 Unaffected: 1778464072   < *
    cpe:/a:redhat:multicluster_engine:2.9::el9
Create a notification for this product.
Show details on NVD website


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