Elden Ring, from the same devs, also has this vuln: https://old.reddit.com/r/Eldenring/comments/s9wai2/it_is_now_possible_for_dark_souls_3_invaders_to/
Apparently, there was an old exploit: https://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2021-34170
This one is new and not "official" yet.
Already happened on twitch: https://www.twitch.tv/videos/1271478221?t=1h20m10s