Missing authorization in GitLab EE versions between 12.4 and 14.3.6, between 14.4.0 and 14.4.4, and between 14.5.0 and 14.5.2 allowed an attacker to access a user's custom project and group templates
https://hackerone.com/reports/475240
https://gitlab.com/gitlab-org/gitlab/-/issues/26103
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39930.json