An issue was discovered in helpers/mailer.php in the Creative Contact Form extension 4.6.2 before 2019-12-03 for Joomla!. A directory traversal vulnerability resides in the filename field for uploaded attachments via the creativecontactform_upload parameter. An attacker could exploit this vulnerability with the ""Send me a copy"" option to receive any files of the filesystem via email.
http://seclists.org/fulldisclosure/2020/Mar/13
http://packetstormsecurity.com/files/156655/Creative-Contact-Form-4.6.2-Directory-Traversal.html
https://extensions.joomla.org/extension/creative-contact-form/
https://www.ait.ac.at/themen/cyber-security/pentesting/security-advisories/ait-sa-20200301-01/
https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2020-9364