v1.21.14-lts.3

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This is the KLTS release for Kubernetes v1.21.14.

Highlights

Rebuilds the v1.21 LTS line with Go 1.25.9.
Carries the current KLTS image, registry, and etcd maintenance patch chain.
Includes current KLTS security backports for this line: CVE-2024-10220, CVE-2025-13281, CVE-2025-1767, and CVE-2025-5187.

Patch chain

Base: v1.21.14
CI chain: v1.21.14-ci
Patches: fix-run-docker.1.24, no-delete-images.1.24, fix-etcd-put-key.1.23, bump-go-1-25-9.1.21, CVE-2024-10220, CVE-2025-13281, CVE-2025-1767, CVE-2025-5187

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Last modified April 22, 2026 : docs: update latest KLTS releases (227a6395)