An issue has been discovered in GitLab CE/EE affecting all versions starting from 15.11 before 15.11.7, all versions starting from 16.0 before 16.0.2. A specially crafted merge request could lead to a stored XSS on the client side which allows attackers to perform arbitrary actions on behalf of victims.
https://hackerone.com/reports/1965750
https://gitlab.com/gitlab-org/gitlab/-/issues/409346
https://gitlab.com/gitlab-org/cves/-/blob/master/2023/CVE-2023-2442.json