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.

CVSS 4.0

9.1CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N

CVSS 3.1

7.4CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N

EPSS

0.2% chance of exploitation in the next 30 days; higher than 9% of CVEs (scores of 2026-10-25)

CWE

CWE-295

Published

2026-10-05

Modified

2026-10-06

Record from

the NVD, synced 2026-10-19

References

• https://github.com/maclof/kubernetes-client
• https://github.com/maclof/kubernetes-client/blob/0.31.0/src/Client.php#L309-L312
• https://github.com/maclof/kubernetes-client/commit/924c0b935fa538ed6b4b0948127609e99d0e6f34
• https://github.com/maclof/kubernetes-client/issues/135
• https://github.com/maclof/kubernetes-client/releases/tag/0.32.0

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