Unrestricted Upload of File with Dangerous Type
The package baserproject/basercms in versions prior to 4.4.1 is affected by Remote Code Execution (RCE). Code may be executed by logging in as a system administrator and uploading an executable script file such as a PHP file. The Edit template component is vulnerable.
CWE-434 - Unrestricted Upload of File with dangerous type
'Unrestricted file upload with dangerous type' attacks involve an attacker uploading or transferring files of dangerous types to the server. The severity of such an attack depends upon the execution mechanism and the storage location of the uploaded file. Thus, it may range from simple defacement to arbitrary file execution, and complete system takeover.