CVE-2022-3294
HighPublished
Node address isn't always verified when proxying
- Published
- Mar 1, 2023
- Updated
- Mar 7, 2025
- Assigning CNA
- kubernetes
- Evidence observed
- Aug 8, 2026
Primary CVSS
8.8/ 10High
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Node address isn't always verified when proxying
nvd · CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HLow · next 30 days
EPSS is a statistical estimate, not a certainty or a measure of impact. Combine it with CVSS, KEV status, exposure and your environment.
Users may have access to secure endpoints in the control plane network. Kubernetes clusters are only affected if an untrusted user can modify Node objects and send proxy requests to them. Kubernetes supports node proxying, which allows clients of kube-apiserver to access endpoints of a Kubelet to establish connections to Pods, retrieve container logs, and more. While Kubernetes already validates the proxying address for Nodes, a bug in kube-apiserver made it possible to bypass this validation. Bypassing this validation could allow authenticated requests destined for Nodes to to the API server's private network.
Privilege Escalation using nodes/proxy (create action allowed) and nodes/status (update/patch actions allowed)
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