/mv version -p output

https://j.mp/3qJRSaK

Server logs

https://gist.github.com/Treppenhaus/4da5ae359a47ebfc736f3fe395c91392

Server Version

[16:57:36 INFO]: §fThis server is running Paper version git-Paper-349 (MC: 1.17.1) (Implementing API version 1.17.1-R0.1-SNAPSHOT) (Git: 9472d38)§r
§eYou are 32 version(s) behind
Download the new version at: §6https://papermc.io/downloads

-> also tried with newest paper and spigot version

Bug Description

Server Crash Exploit using Mutliverse Filter /mv command

Steps to reproduce

1. log into your server
2. run /mv ^(.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.*.++)$^ from console or ingame (works even without permission by default)
3. server stops responding and crashes after a few seconds

Agreements

• I have searched for and ensured there isn't already an open or resolved issue(s) regarding this.
• I was able to reproduce my issue on a freshly setup and up-to-date server with the latest version of Multiverse plugins with no other plugins and with no kinds of other server or client mods.

#2703