Rocket.Chat has fixed a server-side path traversal vulnerability that may
be abused to write files to attacker-controlled locations:
Exploitation of this vulnerability requires uploading attachments with
crafted names and requesting a data download.
No release of Rocket.Chat contains these fixes. Users should consider
cherrypicking f5c7d94bffb279d7a2f859773935fb5cf70c81cd to patch their