An issue has been discovered in GitLab EE affecting all versions starting from 12.0 before 15.10.5, all versions starting from 15.11 before 15.11.1. A malicious group member may continue to commit to projects even from a restricted IP address.
https://hackerone.com/reports/1914049
https://gitlab.com/gitlab-org/gitlab/-/issues/399774
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-1621.json