Vulnerability in Maclof Kubernetes-Client
CVE-2026-105223
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.
Vulnerability class: Improper Certificate Validation
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.4 (High). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N.
EPSS exploit prediction
No EPSS score from FIRST.org yet. New CVEs usually get one within a few days; no score means no signal yet, not low risk. How EPSS works.
Affected products
Weakness classification (CWE)
References
- github.com/maclof/kubernetes-client/issues/135 (issue-tracking)
- github.com/maclof/kubernetes-client (product)
- github.com/maclof/kubernetes-client/commit/924c0b935fa538ed6b4b0948127609e99d0e… (patch)
- github.com/maclof/kubernetes-client/releases/tag/0.32.0 (release-notes)
- github.com/maclof/kubernetes-client/blob/0.31.0/src/Client.php (technical-description)
- www.vulncheck.com/advisories/maclof-kubernetes-client-0.17.0-before-0.32.0-disa… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-105223?
- CVE-2026-105223 is a high-severity vulnerability in Maclof Kubernetes-Client, classified under Improper Certificate Validation. CVSS score: 7.4/10. Published 2026-10-05.
- How severe is CVE-2026-105223?
- High severity. CVSS v3 base score is 7.4 out of 10.