Provide references for CVE-2019-11591.
Where can I find more information about CVE-2019-11591?
References are available at: https://lists.openwall.net/full-disclosure/2019/04/05/12, https://wordpress.org/plugins/contact-form-maker/#developers, http://seclists.org/fulldisclosure/2019/Apr/37, https://wpvulndb.com/vulnerabilities/9252.