In all versions of GitLab CE/EE since version 8.12, an authenticated low-privileged malicious user may create a project with unlimited repository size by modifying values in a project export.
https://hackerone.com/reports/420258
https://gitlab.com/gitlab-org/gitlab/-/issues/24649
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39868.json