Vulnerability Description
If an attacker can write to the filesystem of a container k8s cluster container, they can plant an exec credential plugin in /etc/kubernetes/admin.conf. kubectl will run that plugin as the macOS host user the next time someone pulls the cluster's kubeconfig onto the host with container k8s write-config or create and then runs kubectl against it — turning filesystem access inside an untrusted Linux container into arbitrary command execution on the host. This vulnerability is addressed in Container version 1.5.0.
References
FAQ
What is CVE-2026-113951?
CVE-2026-113951 is a documented vulnerability. If an attacker can write to the filesystem of a container k8s cluster container, they can plant an exec credential plugin in /etc/kubernetes/admin.conf. kubectl will run that plugin as the macOS host ...
How severe is CVE-2026-113951?
CVSS scoring is not yet available for CVE-2026-113951. Check NVD for updates.
Is there a patch for CVE-2026-113951?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.