Improper neutralization of user input in GitLab CE/EE versions 14.4 before 14.7.7, all versions starting from 14.8 before 14.8.5, all versions starting from 14.9 before 14.9.2 allowed an attacker to exploit XSS by injecting HTML in notes.
https://hackerone.com/reports/1481207
https://gitlab.com/gitlab-org/gitlab/-/issues/353370
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-1175.json
http://packetstormsecurity.com/files/166829/Gitlab-14.9-Cross-Site-Scripting.html