Provide references for CVE-2021-27576.
Where can I find more information about CVE-2021-27576?
References are available at: https://lists.apache.org/thread.html/r9bb615bd70a0197368f5f3ffc887162686caeb0b5fc30592a7a871e9%40%3Cuser.openmeetings.apache.org%3E.