Provide references for CVE-2021-39870.
Where can I find more information about CVE-2021-39870?
References are available at: https://hackerone.com/reports/630263, https://gitlab.com/gitlab-org/gitlab/-/issues/29748, https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-39870.json.