Provide references for CVE-2021-40347.
Where can I find more information about CVE-2021-40347?
References are available at: https://gitlab.com/mailman/postorius/-/issues/531, https://phabricator.wikimedia.org/T289798, https://gitlab.com/mailman/postorius/-/tags, https://www.debian.org/security/2021/dsa-4970, https://gitlab.com/mailman/postorius/-/commit/3d880c56b58bc26b32eac0799407d74b64b7474b, https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=993746.