CVE-2026-7163 (GCVE-0-2026-7163)

Vulnerability from cvelistv5 – Published: 2026-04-30 13:18 – Updated: 2026-04-30 21:32
VLAI?
Title
Assisted-service: assisted-service: authenticated users can gain administrative access to openshift clusters via credential disclosure
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.
Severity ?
6.1 (Medium)
CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
CWE
  • CWE-312 - Cleartext Storage of Sensitive Information
Assigner
References
https://access.redhat.com/errata/RHSA-2026:11511 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:11512 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:12116 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/errata/RHSA-2026:12337 vendor-advisoryx_refsource_REDHAT
https://access.redhat.com/security/cve/CVE-2026-7163 vdb-entryx_refsource_REDHAT
https://bugzilla.redhat.com/show_bug.cgi?id=2463152 issue-trackingx_refsource_REDHAT
Impacted products
Vendor Product Version
Red Hat multicluster engine for Kubernetes 2.1 Unaffected: 1776983527 , < * (rpm)
    cpe:/a:redhat:multicluster_engine:2.10::el9
 Create a notification for this product.
    Red Hat multicluster engine for Kubernetes 2.11 Unaffected: 1776987609 , < * (rpm)
    cpe:/a:redhat:multicluster_engine:2.11::el9
 Create a notification for this product.
    Red Hat multicluster engine for Kubernetes 2.7 Unaffected: 1777205801 , < * (rpm)
    cpe:/a:redhat:multicluster_engine:2.7::el8
 Create a notification for this product.
    Red Hat multicluster engine for Kubernetes 2.7 Unaffected: 1777205772 , < * (rpm)
    cpe:/a:redhat:multicluster_engine:2.7::el9
 Create a notification for this product.
Date Public ?
2026-04-30 12:00
Credits
This issue was discovered by Nick Carboni (Red Hat), Omer Vishlitzky (Red Hat), and Riccardo Piccoli (Red Hat).
Show details on NVD website
To clipboard 

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Sightings

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  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
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  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
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  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.



Detection rules are retrieved from Rulezet.