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  3. ›Google Kubernetes Engine
  4. ›Update

Security•Oct 8, 2026

(2026-R43) Security updates

Google Kubernetes EngineGCP · Containers

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.2925000 · cos-121-18867-624-2 · cos-121-18867-624-2 release notes

1.32.13-gke.2662000 · cos-121-18867-624-2 · cos-121-18867-624-2 release notes

1.33.13-gke.1915000 · cos-121-18867-624-2 · cos-121-18867-624-2 release notes

1.34.12-gke.1153000 · cos-125-19216-700-7 · cos-125-19216-700-7 release notes

1.35.8-gke.1919000 · cos-125-19216-700-7 · cos-125-19216-700-7 release notes

1.36.4-gke.2202002 · cos-129-19506-505-8 · cos-129-19506-505-8 release notes

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

1.38.0-gke.2743000+preview · cos-133-19999-44-85 · cos-133-19999-44-85 release notes

Read the original announcement↗

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    Google Kubernetes Engine•Feature•Oct 8, 2026

  4. (2026-R43) Version updates

    Note: Your clusters might not have these versions available. Rollouts are already in progress when we publish the release notes, and can take multiple days to complete across all Google Cloud zones.

    Google Kubernetes Engine•Feature•Oct 8, 2026

  5. (2026-R43) Version updates

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    Google Kubernetes Engine•Feature•Oct 8, 2026