medium6.7
CVE-2025-5187
Kubernetes Nodes can delete themselves by adding an OwnerReference
Impact
A vulnerability exists in the NodeRestriction admission controller in Kubernetes clusters where node users can delete their corresponding node object by patching themselves with an OwnerReference to a cluster-scoped resource. If the OwnerReference resource does not exist or is subsequently deleted, the given node object will be deleted via garbage collection.
Affected packages
| Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|
| go | k8s.io/kubernetes | < 1.31.12 | 1.31.12 |
Weakness classification
References
- NVD record
- CVE.org record
- GitHub advisory
- https://github.com/kubernetes/kubernetes/issues/133471
- https://groups.google.com/g/kubernetes-security-announce/c/znSNY7XCztE
- https://github.com/advisories/GHSA-4x4m-3c2p-qppc
- https://nvd.nist.gov/vuln/detail/CVE-2025-5187
- https://github.com/kubernetes/kubernetes/commit/a2d98cac56a0c5cb2d8abc4d087fc00846b3bc0f