Waystones (Outdated Versions)

Waystones (Outdated Versions)

Mods
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Using Warp Plate to Duplicate Any Item

MorenRx opened this issue ยท 1 comments

commented

Minecraft Version

Other (specify below)

Mod Loader

Forge

Mod Version

11.4.2

Describe the Issue

An exploit allows duplicating items using the Warp Plate GUI.
My game version is 1.19.2, but this exploit should theoretically work in most versions.
Steps to reproduce:

  • One player opens the Warp Plate GUI and places the item they want to duplicate inside, without closing the GUI.
  • Another player (or a mod with fake player functionality) breaks the Warp Plate block.
  • The item inside the Warp Plate drops on the ground, but the first player's GUI remains open.
  • The first player can retrieve the item from the GUI, effectively duplicating it.

Logs

latest.log

Do you use any performance-enhancing mods (e.g. OptiFine) or custom server distributions (e.g. SpongeForge or Arclight)?

No

commented

Unfortunately, the 1.19.2 branch no longer builds, so on that version (or other unsupported versions) I recommend disabling warp plates on multiplayer servers with untrusted players.

In Minecraft 1.20.1, 1.21.1 and 1.21.4, this is now fixed.