A Stored Cross-Site Scripting vulnerability allowed the execution on Javascript payloads on the Metrics Dashboard in GitLab CE/EE 12.8 and later through 13.0.1
https://hackerone.com/reports/824773
https://gitlab.com/gitlab-org/gitlab/-/issues/211956
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13267.json