CVE-2018-19520
An issue was discovered in SDCMS 1.6 with PHP 5.x. app/admin/controller/themecontroller.php uses a check_bad function in an attempt to block certain PHP functions such as eval, but does not prevent use of preg_replace āeā calls, allowing users to execute arbitrary code by leveraging access to admin template management.
Source: CVE-2018-19520