(2026-R38) Security updates

This release includes new GKE versions that use updated Container-Optimized OS images. These updated images are cumulative, incorporating security fixes from all Container-Optimized OS versions released since the previous GKE release.

To identify the specific vulnerabilities that were resolved in each updated Container-Optimized OS image, see the Security release notes for that image. The following table includes links to the release notes for each updated Container-Optimized OS image:

GKE version · Container-Optimized OS version · Details

1.31.14-gke.2689000 · cos-117-18613-731-2 · cos-117-18613-731-2 release notes

1.36.4-gke.1247000 · cos-129-19506-448-8 · cos-129-19506-448-8 release notes

1.37.0-gke.3165000 · cos-129-19506-299-82 · cos-129-19506-299-82 release notes