Provide references for CVE-2020-21056.
Where can I find more information about CVE-2020-21056?
References are available at: https://resp3ctblog.wordpress.com/2019/10/28/fusionpbx-path-traversal-5/, https://github.com/fusionpbx/fusionpbx/commit/cad71240dee2a82cd5766dd67039a87849031aaa.