Confused Deputy in Kubernetes
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.
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describes (1)
Related CVEs.
| ID | severity | exploitable | ||
|---|---|---|---|---|
| CVE-2020-8561US | medium4.1 | — | ||
A security issue was discovered in Kubernetes where actors that control the responses of MutatingWebhookConfiguration or ValidatingWebhookConfiguration requests are able to redirec… | ||||
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references
External citations — patches, advisories, analysis.
- https://github.com/kubernetes/kubernetesPACKAGE
- https://github.com/kubernetes/kubernetes/issues/104720WEB
- https://groups.google.com/g/kubernetes-security-announce/c/RV2IhwcrQsYWEB
- https://kubernetes.io/blog/2026/05/26/reconciling-unfixed-kubernetes-cvesWEB
- https://nvd.nist.gov/vuln/detail/CVE-2020-8561ADVISORY
- https://security.netapp.com/advisory/ntap-20211014-0002WEB
scry
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