(2026-R46) 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

1.32.13-gke.2906000 · cos-121-18867-652-7 · cos-121-18867-652-7 release notes

1.33.13-gke.2207000 · cos-121-18867-652-7 · cos-121-18867-652-7 release notes

1.34.12-gke.1539000 · cos-125-19216-760-8 · cos-125-19216-760-8 release notes

1.35.9-gke.1505000 · cos-125-19216-760-8 · cos-125-19216-760-8 release notes

1.36.5-gke.1982000 · cos-129-19506-578-9 · cos-129-19506-578-9 release notes

1.37.1-gke.3020000 · cos-133-19999-44-159 · cos-133-19999-44-159 release notes

1.38.0-gke.4162000+preview · cos-dev-138-20162-0-0 · cos-dev-138-20162-0-0 release notes