In DedeCMS 5.7SP2, attackers can upload a .php file to the uploads/ directory (without being blocked by the Web Application Firewall), and then execute this file, via this sequence of steps: visiting the management page, clicking on the template, clicking on Default Template Management, clicking on New Template, and modifying the filename from ../index.html to ../index.php.
DedeCMS 5.7 SP2 allows XSS via the function named GetPageList defined in the include/datalistcp.class.php file that is used to display the page numbers list at the bottom of some templates, as demonstrated by the PATHINFO to /member/index.php, /member/pm.php, /member/contentlist.php, or /plus/feedback.php.
Reflected XSS exists in DedeCMS 5.7 SP2 via the /member/pm.php folder parameter.