Provide references for CVE-2019-16991.
Where can I find more information about CVE-2019-16991?
References are available at: https://github.com/fusionpbx/fusionpbx/commit/cd4632b46c62855f7e1c1c93d20ffd64edcb476e, https://resp3ctblog.wordpress.com/2019/10/19/fusionpbx-xss-20/.