Provide references for CVE-2019-9646.
Where can I find more information about CVE-2019-9646?
References are available at: https://lists.openwall.net/full-disclosure/2019/02/05/7, https://security-consulting.icu/blog/2019/02/wordpress-contact-form-email-xss-csrf/, https://wordpress.org/plugins/contact-form-to-email/#developers.