End of life, severity low

Kubernetes 1.35 reaches end of life on 2027-02-28

Published October 31, 2026

Kubernetes 1.35 stops getting security fixes on 2027-02-28. Plan the upgrade before then.

Deadline: February 28, 2027

What's affected

• kubernetes>=1.35 <1.36

What to do

1. Upgrade Kubernetes to a supported version (latest 1.35.x is 1.35.10; move to a newer cycle).

Check whether you were affected

Pharon tells teams automatically when this affects something they run. To check a machine, run this in Claude Code with the Pharon plugin, in the repository that uses it:

/pharon:check-incident eol-kubernetes-1-35

References

• https://endoflife.date/kubernetes

Notice eol-kubernetes-1-35, signed with key feed-prod-2026-10 (Ed25519). The Pharon CLI verifies the signature before using a notice.