From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001 From: Video Date: Wed, 30 Mar 2022 18:20:09 -0600 Subject: [PATCH] Prevent attributes with invalid namespaces from being applied to CraftMetaItems diff --git a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java index d8eb84f28761dce95330afc32e4c011a4ab89b18..8644536d6f1be27d49a7260f35b776ba91144f07 100644 --- a/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java +++ b/src/main/java/org/bukkit/craftbukkit/inventory/CraftMetaItem.java @@ -46,6 +46,7 @@ import net.minecraft.nbt.NbtIo; import net.minecraft.nbt.StringTag; import net.minecraft.nbt.Tag; import net.minecraft.network.chat.Component; +import net.minecraft.resources.ResourceLocation; import net.minecraft.world.item.BlockItem; import org.apache.commons.lang.Validate; import org.apache.commons.lang3.EnumUtils; @@ -481,7 +482,7 @@ class CraftMetaItem implements ItemMeta, Damageable, Repairable, BlockDataMeta { AttributeModifier attribMod = CraftAttributeInstance.convert(nmsModifier); String attributeName = CraftAttributeMap.convertIfNeeded(entry.getString(ATTRIBUTES_IDENTIFIER.NBT)); // Paper - if (attributeName == null || attributeName.isEmpty()) { + if (attributeName == null || attributeName.isEmpty() || attributeName.length() > 256 || !ResourceLocation.isValidResourceLocation(attributeName)) { // Scissors continue; }