An issue has been discovered in GitLab affecting all versions before 13.2.10, 13.3.7 and 13.4.2: XSS in SVG File Preview. Overall impact is limited due to the current user only being impacted.
https://hackerone.com/reports/758653
https://gitlab.com/gitlab-org/gitlab/-/issues/118477
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13339.json