Remote code execution vulnerability in /cmsms-2.1.6-install.php/index.php in CMS Made Simple version 2.1.6 allows remote attackers to inject arbitrary PHP code via the "timezone" parameter in step 4 of a fresh installation procedure.
CMS Made Simple version 2.1.6 and 2.2 are vulnerable to Smarty templating injection in some core modules, resulting in unauthenticated PHP code execution.
CMS Made Simple 2.1.6, 2.2, 2.2.1 are vulnerable to Smarty Template Injection in some core components, resulting in local file read before 2.2, and local file inclusion since 2.2.1
In CMS Made Simple 2.2.3.1, the is_file_acceptable function in modules/FileManager/action.upload.php only blocks file extensions that begin or end with a "php" substring, which allows remote attackers to bypass intended access restrictions or trigger XSS via other extensions, as demonstrated by .phtml, .pht, .html, or .svg.
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.