Telegram Desktop through 2.0.1, Telegram through 6.0.1 for Android, and Telegram through 6.0.1 for iOS allow an IDN Homograph attack via Punycode in a public URL or a group chat invitation URL.
{ "binaries": [ { "binary_version": "1.2.17-1", "binary_name": "telegram-desktop" } ] }
{ "binaries": [ { "binary_version": "3.1.1+ds-1~ubuntu20.04.1", "binary_name": "telegram-desktop" } ] }