OnionShare input validation error vulnerability

OnionShare is an open source tool for securely and anonymously sharing files, hosting websites, and chatting with friends using the Tor network. Used to securely and anonymously share files, host websites, and chat with friends using the Tor network, OnionShare is vulnerable to an input validation error that could be exploited by an attacker to change the username to that of another chat participant via an extra space character at the end of the name string.