CVE-2022-0759

A flaw was found in all versions of kubeclient up to (but not including) v4.9.3, the Ruby client for Kubernetes REST API, in the way it parsed kubeconfig files. When the kubeconfig file does not configure custom CA to verify certs, kubeclient ends up accepting any certificate (it wrongly returns VERIFY_NONE). Ruby applications that leverage kubeclient to parse kubeconfig files are susceptible to Man-in-the-middle attacks (MITM).

• CWE-295
• CWE-295

• https://github.com/ManageIQ/kubeclient/issues/554Issue Tracking, Patch, Third Party Advisory
• https://github.com/ManageIQ/kubeclient/issues/555Issue Tracking, Patch, Third Party Advisory
• https://github.com/ManageIQ/kubeclient/issues/554Issue Tracking, Patch, Third Party Advisory
• https://github.com/ManageIQ/kubeclient/issues/555Issue Tracking, Patch, Third Party Advisory

Published

Mar 25, 2022

Last Modified

Jun 17, 2026

Status

Modified

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
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