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    CVE-2026-66792

    A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a user on a managed cluster to escalate their privileges by creating a Subscription with specific, crafted annotations. Successful exploitation grants the attacker the ability to deploy resources into any namespace with the elevated permissions of the controller's Service Account, potentially leading to unauthorized access and control over cluster resources.

    Published:Aug 17, 2026
    Last Modified:Aug 27, 2026
    EPS:Aug 17, 2026
    EPSS Score:0.00323
    CVSS Score:9.9

    Affected Products

    Vendor
    Redhat
    Product
    Acm
    Vendor
    Redhat
    Product
    Advanced Cluster Management For Kubernetes
    Vendor
    Redhat
    Product
    Multicluster Globalhub
    Vendor
    Redhat
    Product
    Openshift
    Vendor
    Redhat
    Product
    Openshift Container Platform
    Vendor
    Redhat
    Product
    Openshift Data Foundation

    Exploits

    No exploit reference

    Common Weakness Enumeration

    CWE-863 Incorrect Authorization

    Common Attack Pattern Enumeration and Classification (CAPEC)

    No CAPEC recorded yet

    Related CVEs

    CVE-2026-89060 (CVSS 7.7) — A cross-namespace authorization flaw in multicluster-observability-addon allows a user with permission to modi…
    CVE-2026-66786 (CVSS 9.1) — A flaw was found in submariner. In cert-auth mode, the connection configuration is built using free-form strin…
    CVE-2026-73137 (CVSS 7.7) — A flaw was found in the multicloud-operators-subscription component of Red Hat Advanced Cluster Management (RH…
    CVE-2026-67567 (CVSS 9.9) — A flaw was found in the multicloud-operators-subscription component. This vulnerability allows a tenant, who h…
    CVE-2026-66788 (CVSS 3.7) — A flaw was found in Lighthouse. A remote attacker, by compromising a spoke cluster, can exploit a vulnerabilit…
    CVE-2026-66785 (CVSS 2.5) — A flaw was found in Submariner. This vulnerability allows a malicious cluster (spoke) to redirect network traf…
    CVE-2026-66787 (CVSS 5.4) — A flaw was found in the lighthouse component of Red Hat Advanced Cluster Management for Kubernetes. This vulne…
    CVE-2026-76827 (CVSS 6.8) — A flaw was found in search-indexer. This vulnerability allows a registered and authenticated managed cluster t…
    CVE-2026-76139 (CVSS 8) — A flaw was found in acm-operator-bundle. The build process for this component downloads and runs a script from…
    CVE-2026-18874 (CVSS 6.2) — A flaw was found in volsync-addon-controller. This vulnerability allows an attacker to inject malicious YAML (…

    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