CVSS 3.1
4.1 mediumCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:L/I:N/A:NCVE-2020-8561
Medium (4.1) in kubernetes kubernetes. EPSS 2.1% chance of exploitation in the next 30 days.
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.
Severity
- EPSS
- 2.1% chance of exploitation in the next 30 days; higher than 81% of CVEs (scores of 2026-10-31)
- CWEs
- CWE-610, CWE-441
- Published
- Modified
- Record from
- the NVD, synced
Affected
- kubernetes:kubernetes
Packages (OSV)
| Advisory | Ecosystem | Package | Affected | Fixed in |
|---|---|---|---|---|
| GHSA-74j8-88mm-7496 | Go | k8s.io/kubernetes | <=1.22.2 | no fix published |
References
- 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