sys_verifies.php in DedeCMS 5.7 allows remote attackers to execute arbitrary PHP code via the refiles array parameter, because the contents of modifytmp.inc are under an attacker's control.
DedeCMS 5.7 allows remote attackers to execute arbitrary PHP code via the egroup parameter to uploads/dede/stepselect_main.php because code within the database is accessible to uploads/dede/sys_cache_up.php.
file_manage_control.php in DedeCMS 5.7 has CSRF in an fmdo=rename action, as demonstrated by renaming an arbitrary file under uploads/userup to a .php file under the web root to achieve PHP code execution. This uses the oldfilename and newfilename parameters.
DedeCMS 5.7 has CSRF with an impact of arbitrary code execution, because the partcode parameter in a tag_test_action.php request can specify a runphp field in conjunction with PHP code.