k3s v1.36.2+k3s1 released on 24-06-2026
k3s v1.36.2+k3s1 is out now. It brings Kubernetes v1.36.2 plus container runtime and third‑party component fixes aimed at improving node stability, image/CRI behaviour and CVE mitigations.
See the k3s GitHub release notes and the Kubernetes v1.36.2 changelog for full details and the upstream behavioural changes that may affect clusters.
What’s in this release
- Kubernetes upgraded to v1.36.2 — includes upstream bug fixes and behavioural changes that operators should review.
- Container runtime updates: containerd bumped to v2.3.2-k3s2 with a []byte handling fix and an upstream environment‑string fix; cri-api updated to match containerd changes.
- Third‑party component bumps for security and compatibility: Traefik v3.7.4, runc v1.4.2, klipper-helm updated for CVE mitigation, and updates to Flannel, CoreDNS, metrics-server, helm-controller and local-path-provisioner.
Upgrade notes
- No K3s-specific breaking changes are called out here; operators should review the Kubernetes v1.36.2 changelog and follow the k3s upgrade documentation before upgrading.
- Containerd and CRI changes can affect node runtime behaviour — drain and upgrade nodes one at a time, verify container runtime and node health after each upgrade, and consult the k3s GitHub issues if you need to revert.
Share how the upgrade went: open an issue on the k3s GitHub tracker or post on the project Slack with any observations or problems.
