An issue was discovered in GitLab Community and Enterprise Edition before 11.5.8, 11.6.x before 11.6.6, and 11.7.x before 11.7.1. It allows Path Disclosure. When an error is encountered on project import, the error message will display instance internal information.
https://gitlab.com/gitlab-org/gitlab-ce/issues/54867
https://about.gitlab.com/2019/01/31/security-release-gitlab-11-dot-7-dot-3-released/