CVE-2026-66783: medium-severity vulnerability in Red Hat Advanced Cluster Management for…
Submariner-operator: release workflow consumes same-org composite action via mutable @devel branch ref
Published · Updated
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13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 4.4epss 0.4%
A flaw was found in the `submariner-operator` component of Red Hat Advanced Cluster Management for Kubernetes. This vulnerability allows a cluster administrator, or any user with permissions to modify the Submariner Custom Resource (CR), to specify an unvalidated image path. This lack of validation enables an attacker to execute arbitrary code with elevated privileges across the entire cluster, including control-plane nodes, by deploying a malicious image.
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:L/I:L/A:N
Affected products
Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.16Red Hat · Red Hat Advanced Cluster Management for Kubernetes 2.17Related CVEs — Red Hat Advanced Cluster Management for…
In the same product, most dangerous first.
CVE-2026-66786CRITICALSubmariner: submariner: ipsec.conf stanza injection via remote-supplied cablename and subnetsEPSS 1.4%CVE-2024-3727HIGHContainers/image: digest type does not guarantee valid typeEPSS 1.3%CVE-2026-71471CRITICALAcm-search-v2-rhel9: search-v2-operator: hub search cr collector.imageoverride propagated to every spoke as arbitrary container imageEPSS 1.2%CVE-2024-11831MEDIUMNpm-serialize-javascript: cross-site scripting (xss) in serialize-javascriptEPSS 1.1%CVE-2026-16242CRITICALHypershift: konnectivity proxy-server accepts agent connections without validating client certificatesEPSS 0.9%CVE-2026-71472CRITICALAcm-search-v2-rhel9: search-v2-operator: shell-command and sql injection in postgresql-start.sh via cr-supplied work_memEPSS 0.9%