An issue has been discovered in GitLab CE/EE affecting all versions from 13.12 before 17.8.7, 17.9 before 17.9.6, and 17.10 before 17.10.4. Under certain conditions users could bypass IP access restrictions and view sensitive information.
https://hackerone.com/reports/3027775
https://gitlab.com/gitlab-org/gitlab/-/issues/525323