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    CVE-2026-73268

    A flaw was found in the cluster-curator-controller component of multicluster engine (MCE). A tenant with create or update permissions on ClusterCurator resources can inject an arbitrary Job specification. This is possible because the CreateJob() function does not validate user-controlled input when unmarshaling the spec.install.overrideJob raw extension. Successful exploitation allows the injected Job to run with the controller's elevated privileges, leading to arbitrary code execution and privilege escalation, potentially accessing cluster-wide secrets.

    Published:Aug 11, 2026
    Last Modified:Aug 26, 2026
    EPS:Aug 12, 2026
    EPSS Score:0.0037
    CVSS Score:9.9

    Affected Products

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

    Exploits

    No exploit reference

    Related CVEs

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    CVE-2026-66794 (CVSS 9.3) — A flaw was found in the `cluster-proxy-addon` component of Multicluster Engine for Kubernetes. This vulnerabil…
    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-2026-73269 (CVSS 9.9) — A flaw was found in the cluster-curator-controller component. A local user, by creating a ClusterCurator resou…
    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…
    CVE-2026-17107 (CVSS 8.5) — A flaw was found in the cluster-proxy service-proxy component used in Red Hat Advanced Cluster Management for …

    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