Provide references for CVE-2021-38352.
Where can I find more information about CVE-2021-38352?
References are available at: https://www.wordfence.com/vulnerability-advisories/#CVE-2021-38352, https://plugins.trac.wordpress.org/browser/push-notification-by-feedify/tags/2.1.1/includes/base.php#L199.