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Vulnerability · Published Apr 30, 2026 · Assigned by redhat

CVE-2026-7163Assisted-service: assisted-service: authenticated users can gain administrative access to openshift clusters via credential disclosure

Medium 6.1

In plain English

A medium-severity security flaw in assisted-service. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.2% (higher than 9% of all known vulnerabilities).

Severity (CVSS 3.1)6.1Medium
Exploit odds (30 days)0.2%top 90.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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.

Affected products (as reported)

VendorProductVersions
assisted-service 2.7.0 – before 2.7.102.9.0 – before 2.9.42.10.0 – before 2.10.22.11.0 – before 2.11.1
Red Hat multicluster engine for Kubernetes 2.1 see references
Red Hat multicluster engine for Kubernetes 2.11 see references
Red Hat multicluster engine for Kubernetes 2.7 see references
Red Hat multicluster engine for Kubernetes 2.7 see references
Red Hat multicluster engine for Kubernetes 2.9 see references
Red Hat multicluster engine for Kubernetes 2.9 see references

Weakness: CWE-312 · Vector: CVSS:3.1/AV:A/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N

References