https://www.wordfence.com/threat-intel/vulnerabilities/id/342d6941-6987-4756-b554-1699128b9108?source=cve
https://plugins.trac.wordpress.org/browser/metform/trunk/utils/util.php#L555
https://plugins.trac.wordpress.org/changeset?old_path=/metform/tags/3.8.3&old=3047398&new_path=/metform/tags/3.8.4&new=3047398&sfp_email=&sfph_mail =
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