A vulnerability has been found in ClassCMS up to 4.8 and classified as critical. Affected by this vulnerability is an unknown functionality of the file /admin?do=admin:user:editPost of the component User Management Page. The manipulation leads to improper handling of insufficient privileges. The attack can be launched remotely. The exploit has been disclosed to the public and may be used.
ClassCMS <=4.8 is vulnerable to file inclusion in the nowView method in/class/cms/cms.php, which can include a file uploaded to the/class/template directory to execute PHP code.
Classcms v2.5 and below contains an arbitrary file upload via the component \class\classupload. This vulnerability allows attackers to execute code injection via a crafted .txt file.