Provide references for CVE-2019-16967.
Where can I find more information about CVE-2019-16967?
References are available at: https://issues.freepbx.org/browse/FREEPBX-20436, https://github.com/FreePBX/manager/commit/071a50983ca6a373bb2d1d3db68e9eda4667a372, https://resp3ctblog.wordpress.com/2019/10/19/freepbx-xss-2/.