GitLab before 12.8.2 allows Information Disclosure. Badge images were not being proxied, causing mixed content warnings as well as leaking the IP address of the user.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2020-2552
https://about.gitlab.com/releases/2020/03/04/gitlab-12-dot-8-dot-2-released/index.html
https://about.gitlab.com/releases/2020/03/04/gitlab-12-dot-8-dot-2-released/