In CMS Made Simple 2.2.3.1, in modules/New/action.addcategory.php, stored XSS is possible via the m1_name parameter to admin/moduleinterface.php during addition of a category, a related issue to CVE-2010-3882.
In CMS Made Simple (CMSMS) 2.2.2, remote authenticated administrators can upload a .php file via a CMSContentManager action to admin/moduleinterface.php, followed by a FilePicker action to admin/moduleinterface.php in which type=image is changed to type=file.
In admin\addgroup.php in CMS Made Simple 2.1.6, when adding a user group, there is no XSS filtering, resulting in storage-type XSS generation, via the description parameter in an addgroup action.
CMS Made Simple (CMSMS) 2.1.6 allows remote authenticated administrators to execute arbitrary PHP code via the code parameter to admin/editusertag.php, related to the CreateTagFunction and CallUserTag functions. NOTE: the vendor reportedly has stated this is "a feature, not a bug.
XSS exists in the CMS Made Simple (CMSMS) 2.1.6 "Content-->News-->Add Article" feature via the m1_title parameter. Someone must login to conduct the attack.
XSS exists in the CMS Made Simple (CMSMS) 2.1.6 "Content-->News-->Add Article" feature via the m1_summary parameter. Someone must login to conduct the attack.
XSS exists in the CMS Made Simple (CMSMS) 2.1.6 "Content-->News-->Add Article" feature via the m1_content parameter. Someone must login to conduct the attack.