Webhook redirect in kube-apiserver
CVE-2020-8561

4.1MEDIUM

Key Information:

Vendor: Kubernetes
Status: Kubernetes
Vendor: CVE Published:; 20 September 2021

What is CVE-2020-8561?

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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