The Kubernetes integration in GitLab Enterprise Edition 11.x before 11.2.8, 11.3.x before 11.3.9, and 11.4.x before 11.4.4 has SSRF.
https://gitlab.com/gitlab-org/gitlab-ce/issues/53158
https://about.gitlab.com/2018/11/01/critical-security-release-gitlab-11-dot-4-dot-4-released/