End of life, severity medium

Kubernetes 1.31 reached end of life on 2025-11-11

Published October 31, 2026

Kubernetes 1.31 no longer gets security fixes.

Deadline: November 11, 2025

What's affected

• kubernetes>=1.31 <1.32

What to do

1. Upgrade Kubernetes to a supported version (latest 1.31.x is 1.31.14; 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-1-31

References

• https://endoflife.date/kubernetes

Notice eol-kubernetes-1-31, signed with key feed-prod-2026-10 (Ed25519). The Pharon CLI verifies the signature before using a notice.