An issue has been discovered in GitLab affecting all versions starting from 15.7 before 15.8.5, from 15.9 before 15.9.4, and from 15.10 before 15.10.1 that allows for crafted, unapproved MRs to be introduced and merged without authorization
https://hackerone.com/reports/1767639
https://gitlab.com/gitlab-org/gitlab/-/issues/383776
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-4143.json