Provide references for CVE-2021-32707.
Where can I find more information about CVE-2021-32707?
References are available at: https://github.com/nextcloud/security-advisories/security/advisories/GHSA-xxp4-44xc-8crh, https://github.com/nextcloud/mail/pull/5189, https://hackerone.com/reports/1215251.