An issue has been discovered in GitLab EE affecting all versions starting from 15.6 before 15.6.1. It was possible to create a malicious README page due to improper neutralisation of user supplied input.
https://hackerone.com/reports/1777934
https://gitlab.com/gitlab-org/gitlab/-/issues/383208
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-4092.json