Claimed Chunks security breach issues and other troubles

[GedeonGrays]

Your GTNH Discord Username

gedeongrays

Mod Version

2.2.40

Bug Report

I tried to thoroughly test all of Server Utilities' security features, but there are likely still some remaining issues. However, I believe that fixing the issues I've identified will be enough to consider Claimed Chunks' protection truly reliable.

1. Ignoring PvP status (damage players regardless of Enable PVP):

• Bow
• Splash Potions
• FakePlayer

2. Players can interact with blocks inside other players' Claimed Chunks:

• Crafting Table can be opened and used
• Anvil can be opened and broken during use
• Wooden Door can be opened/closed

3. Projectiles can interact with blocks inside other players' Claimed Chunks:

• The released Arrow can press the wooden Button

4. Players can interact with entities inside other players' Claimed Chunks:

• Snowballs, Arrows, Eggs, and the Fishing Rod's Hook can break Item Frames and Paintings and attack animals
• Animals can be leashed (not tied to the Fence), and also untied from the Fence
• Shears can shear animals
• Bucket can milk cows, and Bowl can make Mushroom Stew with Mooshroom
• Saddles can be placed on animals
• The player can mount animals, boats and minecarts
• The player can tame animals
• The player can paint sheep and wolf collars
• The player can place any item in the Item Frame and rotate it
• The player can push the Minecart with Furnace by right-clicking and put Coal inside
• The player can open the Minecart with Chest and Minecart with Hopper and place/remove the contents

5. Griefing other players' Claimed Chunks from outside:

• Liquids may leak inside
• Grass and Flowers can be grown into Claimed Chunks using Bone Meal outside
• Trees and large mushrooms can grow into Claimed Chunks
• Melons and Pumpkins can grow into Claimed Chunks
• Pistons can push blocks into Claimed Chunks
• The player can summon an Iron Golem or Wither on the edge of a Claimed Chunk (causing the Block of Iron or Wither Skeleton Skulls and Soul Sand inside the Claimed Chunk to disappear)

Video demonstration

Minecraft_1.7.10_2026-06-07_14-47-58.mp4

Minecraft_1.7.10_2026-06-07_19-09-00.mp4

6. Sync issues (I think):

• If you right-click a block inside other players' Claimed Chunks with food/potion in hand several times, the food/potion will be used automatically

Video demonstration

Minecraft._1.7.10_2026-06-07_18-35-37.mp4

• You can place blocks or destroy blocks on the client side (eg liquids)

Video demonstration

Minecraft_1.7.10_2026-06-07_18-49-27.mp4

7. Duplication using other players' Claimed Chunks:

• The player can dupe Iron/Snow Golems and Pumpkins, Withers and Wither Skeleton Skulls, and attachable blocks (such as Ladders) by placing a Pumpkin or Wither Skeleton Skull on the edge of a Claimed Chunk

Video demonstration

Minecraft_1.7.10_2026-06-07_14-33-52.mp4

Minecraft_1.7.10_2026-06-07_19-19-56.mp4

8. Other (I'm not sure what category this should be in ¯\_(ツ)_/¯):

• Boats can be placed inside other players' Claimed Chunks
• Boats can break Lily Pads inside other players' Claimed Chunks
• The player can ignite TNT with a flaming arrow (bow with the Flame I enchantment) inside other players' Claimed Chunks

P. S. That's all I could find that I think needs correction. I'd be happy to double-check anything or provide any additional information if needed. Thank you for your time.

Java Version

Java 8

Mod List or GTNH Pack Version

Client and server mods are identical:

• +unimixins-all-1.7.10-0.3.1
• gtnhlib-0.11.4
• ServerUtilities-2.2.40

Final Checklist

• I have searched the issues and haven't found a similar issue.