CVE-2026-105223 maclof kubernetes-client - Authentication Bypass

maclof kubernetes-client < 0.32.0 contains a broken authentication caused by disabled TLS certificate verification in parseKubeconfig() and parseKubeconfigFile() when kubeconfig lacks certificate-authority-data, letting on-path attackers capture credentials and tamper API traffic, exploit requires a kubeconfig without certificate-authority-data.

CVSS base score 7.4 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.20% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Authentication Bypass
Impact
Information Disclosure, Data Tampering, Man In The Middle
CVSS vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
Published
5 October 2026
Updated
15 October 2026
Weakness
CWE-295

Vendor fix

Update to version 0.32.0 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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