An issue has been discovered in GitLab affecting all versions starting from 10.6 before 16.1.5, all versions starting from 16.2 before 16.2.5, all versions starting from 16.3 before 16.3.1 in which any user can read limited information about any project's imports.
https://gitlab.com/gitlab-org/gitlab/-/issues/415117
https://about.gitlab.com/releases/2023/08/31/security-release-gitlab-16-3-1-released/