CVE-2020-15926
Rocket.Chat through 3.4.2 allows XSS where an attacker can send a specially crafted message to a channel or in a direct message to the client which results in remote code execution on the client side.
Date published : 2020-08-18
https://blog.redteam.pl/2020/08/rocket-chat-xss-rce-cve-2020-15926.html