A vulnerability in QCMS version 6.0.5 allows authenticated users to read arbitrary files from the server due to insufficient validation of the "Name" parameter in the backend template editor. By manipulating the parameter, attackers can perform directory traversal and access sensitive files outside the intended template directory, potentially exposing system configuration, PHP source code, or other sensitive information.
An issue was discovered in QCMS 3.0.1. upload/System/Controller/guest.php has XSS, as demonstrated by the name parameter, a different vulnerability than CVE-2018-8070.