Provide references for CVE-2015-9448.
Where can I find more information about CVE-2015-9448?
References are available at: https://wpvulndb.com/vulnerabilities/8324, https://wordpress.org/plugins/sendpress/#developers, http://cinu.pl/research/wp-plugins/mail_8a2f7613577ea8e613ec274aeec14527.html.