CVE-2025-0426: Node Denial of Service via kubelet Checkpoint API

February 13, 2025

A security issue was discovered in Kubernetes where a large number of container checkpoint requests made to the unauthenticated kubelet read-only HTTP endpoint may cause a Node Denial of Service by filling the Node’s disk.

References

github.com/advisories/GHSA-jgfp-53c3-624w
github.com/kubernetes/kubernetes
github.com/kubernetes/kubernetes/issues/130016
groups.google.com/g/kubernetes-security-announce/c/KiODfu8i6w8
nvd.nist.gov/vuln/detail/CVE-2025-0426

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