CVE-2020-8561
Webhook redirect in kube-apiserver
- State
- Published
- Severity
- 4.1 Medium
- Published
- Sep 20, 2021
- Updated
- Jun 1, 2026
- Reserved
- Feb 3, 2020
Description
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.
Scores
| CVSS | Score | Vector | Source |
|---|---|---|---|
| 3.1 | 4.1 Medium | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:N | kubernetes |
Weaknesses
- CWE-441 Unintended Proxy or Intermediary
Affected Products
| Product | Versions |
|---|---|
KubernetesKubernetes |
|
References
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