An IDOR exists in < 12.3.2, < 12.2.6, and < 12.1.12 for GitLab Community Edition (CE) and Enterprise Edition (EE) that allowed a project owner or maintainer to see the members of any private group via merge request approval rules.Referenceshttps://about.gitlab.com/blog/2019/09/30/security-release-gitlab-12-dot-3-dot-2-released/https://hackerone.com/reports/518995
