CVE-2018-17613
Telegram Desktop (aka tdesktop) 1.3.16 alpha, when "Use proxy" is enabled, sends credentials and application data in cleartext over the SOCKS5 protocol.
Date published : 2018-09-28
https://seclists.org/oss-sec/2018/q3/280
https://www.inputzero.io/2018/09/telegram-share-password-in-cleartext.html