medium4.1
CVE-2020-8561
A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration request…
Impact
A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirect kube-apiserver requests to private networks of the apiserver. If that user can view kube-apiserver logs when the log level is set to 10, they can view the redirected responses and headers in the logs.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| Kubernetes | Kubernetes | Versions 1.20.11, 1.21.5, 1.22.2 |
Weakness classification
References
- NVD record
- CVE.org record
- https://github.com/kubernetes/kubernetes/issues/104720
- https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY
- https://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cves/
- https://security.netapp.com/advisory/ntap-20211014-0002/
- https://github.com/kubernetes/kubernetes/issues/104720
- https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsY
- https://security.netapp.com/advisory/ntap-20211014-0002/