A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. GitLab OAuth endpoint was vulnerable to brute-force attacks through a specific parameter.
https://gitlab.com/gitlab-org/gitlab/-/issues/29746
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13312.json