A Stored Cross-Site Scripting vulnerability allowed the execution of arbitrary Javascript code in the blobs API in all previous GitLab CE/EE versions through 13.0.1
https://hackerone.com/reports/672150
https://gitlab.com/gitlab-org/gitlab/-/issues/200094
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13271.json