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    CVE-2026-73267

    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.

    Published:Aug 21, 2026
    Last Modified:Sep 2, 2026
    EPS:Aug 21, 2026
    EPSS Score:0.00462
    CVSS Score:7.7

    Affected Products

    Vendor
    Redhat
    Product
    Multicluster Engine
    Vendor
    Redhat
    Product
    Multicluster Engine For Kubernetes

    Exploits

    No exploit reference

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High