Lack of email address ownership verification in the CODEOWNERS feature in all versions of GitLab EE starting from 11.3 before 14.2.6, all versions starting from 14.3 before 14.3.4, and all versions starting from 14.4 before 14.4.1 allows an attacker to bypass CODEOWNERS Merge Request approval requirement under rare circumstances
https://hackerone.com/reports/1237750
https://gitlab.com/gitlab-org/gitlab/-/issues/335191
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39909.json