CMS Made Simple 2.x before 2.1.3 and 1.x before 1.12.2, when Smarty Cache is activated, allow remote attackers to conduct cache poisoning attacks, modify links, and conduct cross-site scripting (XSS) attacks via a crafted HTTP Host header in a request.

SQL injection vulnerability in the News module in CMS Made Simple (CMSMS) before 1.11.10 allows remote authenticated users with the "Modify News" permission to execute arbitrary SQL commands via the sortby parameter to admin/moduleinterface.php. NOTE: some of these details are obtained from third party information.

Cross-site scripting (XSS) vulnerability in admin/edituser.php in CMS Made Simple 1.10.3 and earlier allows remote attackers to inject arbitrary web script or HTML via the email parameter (aka the Email Address field in the Edit User template).