An issue has been discovered in GitLab CE/EE affecting all versions starting from 13.11 before 13.11.7, all versions starting from 13.12 before 13.12.8, and all versions starting from 14.0 before 14.0.4. A specially crafted design image allowed attackers to read arbitrary files on the server.
https://hackerone.com/reports/1212067
https://gitlab.com/gitlab-org/gitlab/-/issues/335205
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22234.json