Bug 2560196 (CVE-2026-113951)

Summary: CVE-2026-113951 Apple Container: container: Arbitrary command execution on host via malicious Kubernetes configuration
Product: [Other] Security Response Reporter: OSIDB Bzimport <bzimport>
Component: vulnerability-draftAssignee: Product Security DevOps Team <prodsec-dev>
Status: NEW --- QA Contact:
Severity: high Docs Contact:
Priority: high    
Version: unspecifiedKeywords: Security
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Hardware: All   
OS: Linux   
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A flaw was found in container. An attacker with write access to the filesystem inside a managed cluster container can inject a malicious credential plugin into the Kubernetes configuration file. When a host user imports the configuration and runs cluster management tools against it, the embedded plugin executes under the host user's account. This flaw allows an attacker to break out of container boundaries and achieve arbitrary command execution on the host system.
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Description OSIDB Bzimport 2026-10-23 21:01:24 UTC 
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.