Improper Certificate Validation Affecting cluster-api-kubeadm-control-plane-controller package, versions <1.12.8-r2
Threat Intelligence
The probability is the direct output of the EPSS model, and conveys an overall sense of the threat of exploitation in the wild. The percentile measures the EPSS probability relative to all known EPSS scores. Note: This data is updated daily, relying on the latest available EPSS model version. Check out the EPSS documentation for more details.
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Test your applications- Snyk IDSNYK-MINIMOSLATEST-CLUSTERAPIKUBEADMCONTROLPLANECONTROLLER-17232125
- published8 Jun 2026
- disclosed22 May 2026
Introduced: 22 May 2026
NewCVE-2026-42508 (opens in a new tab)How to fix?
Upgrade Minimos:latest cluster-api-kubeadm-control-plane-controller to version 1.12.8-r2 or higher.
NVD Description
Note: Versions mentioned in the description apply only to the upstream cluster-api-kubeadm-control-plane-controller package and not the cluster-api-kubeadm-control-plane-controller package as distributed by Minimos.
See How to fix? for Minimos:latest relevant fixed versions and status.
Previously, a revoked 'SignatureKey' belonging to a CA was not correctly checked for revocation. Now, both the 'key' and 'key.SignatureKey' are checked for @revoked.