Java Edition 1.21.1

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Not to be confused with Java Edition 1.21.10.
Minecraft 1.21.1
1.21.1 banner.jpg: Infobox image for Minecraft 1.21.1 the version in Minecraft
Java Edition 1.21.1.png: Infobox image for Minecraft 1.21.1 the version in Minecraft
Edition

Java Edition

Release date

August 8, 2024

Development versions
Downloads

Client (.json)
Server

Obfuscation maps

Client
Server

Protocol version

767

Data version

3955

Resource pack format

34

Data pack format

48

Minimum Java version

Java SE 21

Other editions with a version "1.21.1":
 

1.21.1 is a minor hotfix update to Java Edition released on August 8, 2024,[1] which fixes critical exploits including update suppression, and adds two new languages. Servers running this version are compatible with 1.21 clients.

Additions

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General

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Languages

Fixes

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4 issues fixed

From released versions before 1.20.5

  • MC-254899 – Sitting/standing a tamed cat does not trigger minecraft:player_interacted_with_entity
  • MC-260689 – Arm spins when swimming with a loaded Crossbow in your offhand

Private issues

  • Fixed block entity swap based update suppression as shown in this video.
  • Fixed an exploit which allows modified clients to crash the server by requesting command completion for a malicious target selector input, causing a crash due to stack exhaustion.

Videos

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Video made by slicedlime:

References

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  1. "Minecraft Java Edition 1.21.1" – Minecraft.net, August 8, 2024.
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