Replicated 2.26.0 to 2.30.2 originally shipped with Kubernetes 1.11.1, but was updated to 1.11.5 after CVE-2018-1002105.
To update your version of Kubernetes, re-run the kubernetes-init script passing in the kubernetes-upgrade-patch-version flag:
curl https://get.replicated.com/kubernetes-init?replicated_tag=2.30.2 | sudo bash -s kubernetes-upgrade-patch-version
Or for airgap installs, download the updated bundle:
curl -O https://s3.amazonaws.com/replicated-airgap-work/stable/replicated-2.30.2%2B2.30.2%2B2.30.2__docker__kubernetes.tar.gz