Provide references for CVE-2018-21012.
Where can I find more information about CVE-2018-21012?
References are available at: https://wordpress.org/plugins/cf7-invisible-recaptcha/#developers, https://www.pluginvulnerabilities.com/2018/05/17/reflected-cross-site-scripting-xss-vulnerability-in-cf7-invisible-recaptcha/.