(2026-R45) 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.3042000 · cos-121-18867-638-5 · cos-121-18867-638-5 release notes

1.32.13-gke.2788000 · cos-121-18867-638-5 · cos-121-18867-638-5 release notes

1.33.13-gke.2074000 · cos-121-18867-638-5 · cos-121-18867-638-5 release notes

1.35.8-gke.2308000 · cos-125-19216-739-5 · cos-125-19216-739-5 release notes

1.37.1-gke.1552000 · cos-133-19999-44-85 · cos-133-19999-44-85 release notes

1.37.1-gke.2097000 · cos-133-19999-44-106 · cos-133-19999-44-106 release notes

1.38.0-gke.3229000+preview · cos-133-19999-44-85 · cos-133-19999-44-85 release notes