A vulnerability was discovered in GitLab versions before 13.1.10, 13.2.8 and 13.3.4. The revocation feature was not revoking all session tokens and one could re-use it to obtain a valid session.
https://hackerone.com/reports/896225
https://gitlab.com/gitlab-org/gitlab/-/issues/222508
https://gitlab.com/gitlab-org/cves/-/blob/master/2020/CVE-2020-13299.json