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SmartSpawner

Enhances spawner use with GUI that generates mob drops and experience without spawning entity

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Release
1.5.6.2

Nighter released SmartSpawner version 1.5.6.2 on November 9, 2025

SmartSpawner - Version 1.5.6.2

Critical Dupe Patched

  • Fixed item duplication exploit caused by race condition in VirtualInventory synchronization with storage GUI

Technical Details

The exploit involved using two game instances with swarm mode (custom mod) to create a race condition between spawner inventories. This has been completely patched by:

  • Synchronizing inventory operations across all connected clients
  • Adding transaction verification before committing item changes
  • Implementing proper locking mechanisms for concurrent access

All users running v1.5.4.3 or lower should update immediately.

Information

Published onNovember 9, 2025
Downloads3

Platforms

Paper Paper (1.21-1.21.10)