Discuz! DiscuzX through X3.4 has reflected XSS via forum.php?mod=post&action=newthread because data/template/1diyportalview.tpl.php does not restrict the content.
Discuz! DiscuzX X3.4 allows remote attackers to bypass intended access restrictions via the archiver\index.php action parameter.
Discuz! DiscuzX X3.4 has XSS via the include\spacecp\spacecpspace.php appid parameter in a delete action.
Discuz! DiscuzX X3.4 has XSS via the view parameter to include/space/spacepoll.php, as demonstrated by a mod=space do=poll request to home.php.