CVE-2025-62783
📋 TL;DR
InventoryGui library versions 1.6.1-SNAPSHOT and earlier contain a vulnerability that allows item duplication in Minecraft servers when the experimental Bundle item feature is enabled. This affects any Bukkit/Spigot plugin using the GuiStorageElement functionality. Server administrators using vulnerable versions with Bundle items enabled are at risk.
💻 Affected Systems
- InventoryGui library for Bukkit/Spigot plugins
📦 What is this software?
Inventorygui by Phoenix616
⚠️ Risk & Real-World Impact
Worst Case
Malicious players could duplicate valuable in-game items, causing severe economic disruption in server economies and potentially crashing servers through resource exhaustion.
Likely Case
Players discover and exploit the bug to duplicate items, leading to server economy inflation and unfair gameplay advantages.
If Mitigated
Limited impact with proper monitoring and quick response to suspicious item duplication reports.
🎯 Exploit Status
Exploitation requires player access to GUI interfaces using GuiStorageElement and Bundle items enabled. No public exploit code has been released.
🛠️ Fix & Mitigation
✅ Official Fix
Patch Version: 1.6.2-SNAPSHOT
Vendor Advisory: https://github.com/Phoenix616/InventoryGui/security/advisories/GHSA-598q-jw82-5w66
Restart Required: No
Instructions:
1. Update InventoryGui dependency to version 1.6.2-SNAPSHOT or later. 2. Rebuild/update any plugins using InventoryGui. 3. No server restart required for library updates in most cases.
🔧 Temporary Workarounds
Disable Bundle Items
allDisable the experimental Bundle item feature in server configuration
Set 'enable-bundle-items' to false in server.properties or relevant config file
🧯 If You Can't Patch
- Disable experimental Bundle item feature in server configuration
- Monitor server logs for unusual item duplication patterns and investigate player reports
🔍 How to Verify
Check if Vulnerable:
Check if InventoryGui version is 1.6.1-SNAPSHOT or earlier AND Bundle items are enabled in server configurationCheck Version:
Check plugin.yml or library manifest for InventoryGui versionVerify Fix Applied:
Verify InventoryGui version is 1.6.2-SNAPSHOT or later, or confirm Bundle items are disabled📡 Detection & Monitoring
Log Indicators:
- Unusual item duplication patterns in server logs
- Multiple identical item transactions in quick succession
- Player reports of item duplication
Network Indicators:
- N/A - this is a server-side game mechanic vulnerability
SIEM Query:
Search for patterns of identical item IDs being created multiple times in short timeframes