Provide references for CVE-2021-43266.
Where can I find more information about CVE-2021-43266?
References are available at: https://bugs.launchpad.net/mahara/+bug/1942903, https://mahara.org/interaction/forum/topic.php?id=8952, https://mahara.org/interaction/forum/topic.php?id=8995, https://bugs.launchpad.net/mahara/+bug/1949527.