---
id: CVE-2026-105223
title: >-
  maclof kubernetes-client 0.17.0 before 0.32.0 disables TLS certificate
  verification in parseKubeconfig() and parseKubeconfigFile() when a kubeconfig
  lacks certificate-authority-data, ignoring insecure-skip-tls-verify
summary: >-
  maclof kubernetes-client 0.17.0 before 0.32.0 disables TLS certificate
  verification in parseKubeconfig() and parseKubeconfigFile() when a kubeconfig
  lacks certificate-authority-data, ignoring insecure-skip-tls-verify. On-path
  attackers c…
severity: high
cvss: 7.4
cvssVector: 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N'
cwe:
  - CWE-295
vendor: maclof
product: kubernetes-client
affected:
  - kubernetes-client >= 0.17.0 < 0.32.0
published: '2026-10-05'
updated: '2026-10-05'
sourceUpdated: '2026-10-05T01:16:28.480'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-105223'
references:
  - url: 'https://github.com/maclof/kubernetes-client'
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/maclof/kubernetes-client/blob/0.31.0/src/Client.php#L309-L312
    label: disclosure@vulncheck.com
  - url: >-
      https://github.com/maclof/kubernetes-client/commit/924c0b935fa538ed6b4b0948127609e99d0e6f34
    label: disclosure@vulncheck.com
  - url: 'https://github.com/maclof/kubernetes-client/issues/135'
    label: disclosure@vulncheck.com
  - url: 'https://github.com/maclof/kubernetes-client/releases/tag/0.32.0'
    label: disclosure@vulncheck.com
  - url: >-
      https://www.vulncheck.com/advisories/maclof-kubernetes-client-0.17.0-before-0.32.0-disabled-tls-certificate-verification
    label: disclosure@vulncheck.com
tags:
  - nvd
  - cve.org
ingestedAt: '2026-10-05T01:08:41.781Z'
---

## Overview

maclof kubernetes-client 0.17.0 before 0.32.0 disables TLS certificate verification in parseKubeconfig() and parseKubeconfigFile() when a kubeconfig lacks certificate-authority-data, ignoring insecure-skip-tls-verify. On-path attackers can impersonate the Kubernetes API server to capture Bearer tokens or Basic credentials and tamper with WebSocket or REST API traffic.

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.