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Custom Content Type Manager (CCTM) for WordPress contains a flaw that allows a remote user to execute arbitrary PHP code. This flaw exists because the upload_form.php script does not properly verify or sanitize user-uploaded files. By uploading a .php, .jpg, or .gif file, the remote system will place the file in a user-accessible path. Making a direct request to the uploaded file will allow the user to execute the script.
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