In the mintupload package through 4.2.0 for Linux Mint, service-name mishandling leads to command injection via shell metacharacters in check_connection, drop_data_received_cb, and Service.remove. A user can modify a service name in a ~/.linuxmint/mintUpload/services/service file.
The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.