(2026-R44) 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.2963000 · cos-121-18867-624-8 · cos-121-18867-624-8 release notes

1.35.8-gke.1975000 · cos-125-19216-700-23 · cos-125-19216-700-23 release notes

1.37.1-gke.1697000 · cos-133-19999-44-85 · cos-133-19999-44-85 release notes

1.38.0-gke.2884000+preview · cos-133-19999-44-85 · cos-133-19999-44-85 release notes