CVE-2022-0759

Name: CVE-2022-0759
Creator: NVD / NIST
Published: 2022-03-25T19:15:10.283+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

HIGHCVSS 8.1/10EPSS 0.91%

Last modified Jun 17, 2026

CVE-2022-0759 is a high-severity vulnerability rated 8.1/10 on the CVSS scale. 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). EPSS estimates a 0.91% chance of exploitation in the next 30 days.

Description

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).

Metrics

CVSS 3.1

8.1/10

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

EPSS Probability

0.91%

55.2th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

Affected Software

Vendor	Product	Versions
Redhat	Kubeclient	< 4.9.3

References

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

Timeline

Published: Mar 25, 2022
Last Modified: Jun 17, 2026
Status: Modified

Frequently Asked Questions

What is CVE-2022-0759?

How severe is CVE-2022-0759?

CVE-2022-0759 has a CVSS score of 8.1/10 (HIGH severity). The EPSS model estimates a 0.91% probability of exploitation in the next 30 days.

How do I fix CVE-2022-0759?

Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.

Are you affected by CVE-2022-0759?

Run a free Strix scan to check your systems for this vulnerability.

Scan your code now

Source: NVD / NIST