Slack: Tricking the "Create snippet" feature into displaying the wrong filetype can lead to RCE on Slack users

An issue in Slack's Create snippet feature results in filetypes being displayed incorrectly. This can lead to RCE if a Slack user downloads an executable file thinking that it is a CSV or other benign file type. https://www.youtube.com/watch?v=cIlGfnn4iG8...