An issue has been discovered in GitLab affecting all versions starting with 3.0.1. Improper access control allows demoted project members to access details on authored merge requests
https://hackerone.com/reports/962604
https://gitlab.com/gitlab-org/gitlab/-/issues/243491
https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22176.json