A branch/tag name confusion in GitLab CE/EE affecting all versions prior to 15.2.5, 15.3 prior to 15.3.4, and 15.4 prior to 15.4.1 allows an attacker to manipulate pages where the content of the default branch would be expected.
https://hackerone.com/reports/1498354
https://gitlab.com/gitlab-org/gitlab/-/issues/354948
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-3288.json