DedeCMS through 5.6 allows arbitrary file upload and PHP code execution by embedding the PHP code in a .jpg file, which is used in the templet parameter to member/articleedit.php.
A file upload issue exists in DeDeCMS before 5.7-sp1, which allows malicious users getshell.
Multiple SQL injection vulnerabilities in DeDeCMS, possibly 5.6, allow remote attackers to execute arbitrary SQL commands via the id parameter to (1) list.php, (2) members.php, or (3) book.php.