tcpdf before 6.2.0 uploads files from the server generating PDF-files to an external FTP.
{ "binaries": [ { "binary_name": "php-tcpdf", "binary_version": "6.0.048+dfsg-2" } ] }
{ "binaries": [ { "binary_name": "php-tcpdf", "binary_version": "6.0.093+dfsg-1ubuntu1" } ] }