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    CVE-2026-73269

    A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resource with a specific naming convention, can trigger the creation of a cluster-scoped ClusterRoleBinding. This allows the user to escalate their privileges from namespace-local access to cluster-wide control. This privilege escalation grants broad permissions, including the ability to access and manipulate secrets, manage cluster actions, and delete hosted clusters or node pools.

    Published:Aug 11, 2026
    Last Modified:Aug 26, 2026
    EPS:Aug 12, 2026
    EPSS Score:0.00258
    CVSS Score:9.9

    Affected Products

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

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-269 Improper Privilege Management

    Related CVEs

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    CVE-2026-75924 (CVSS 8.7) — A flaw was found in managed-serviceaccount. A compromised addon-manager pod, due to its ClusterRole granting e…
    CVE-2026-66795 (CVSS 9.9) — A flaw was found in the managedcluster-import-controller. The Certificate Signing Request (CSR) auto-approval …
    CVE-2026-19130 (CVSS 5.8) — A flaw was found in the provider-credential-controller component of multicluster-engine (MCE). An attacker wit…
    CVE-2026-73268 (CVSS 9.9) — A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with creat…
    CVE-2026-73266 (CVSS 7.1) — A flaw was found in the clusterclaims-controller component of Multicluster Engine (MCE). An authenticated tena…
    CVE-2026-10059 (CVSS 9.1) — A flaw was found in the Multicluster Engine for Kubernetes ClusterCurator controller. A tenant administrator w…
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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