An issue has been discovered in GitLab CE/EE affecting all versions starting from 9.3 before 15.0.5, all versions starting from 15.1 before 15.1.4, all versions starting from 15.2 before 15.2.1. GitLab was returning contributor emails due to improper data handling in the Datadog integration.
https://gitlab.com/gitlab-org/gitlab/-/issues/361654
https://gitlab.com/gitlab-org/cves/-/blob/master/2022/CVE-2022-2534.json