InventoryGui is a library for creating chest GUIs for Bukkit/Spigot plugins. Versions 1.6.3-SNAPSHOT and earlier contain a vulnerability where GUIs using GuiStorageElement can allow item duplication when the experimental Bundle item feature is enabled on the server. The vulnerability is resolved in version 1.6.4-SNAPSHOT.
Exploitability
AV:NAC:LAT:PPR:LUI:PVulnerable System
VC:NVI:HVA:LSubsequent System
SC:NSI:LSA:L5.9/CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:P/VC:N/VI:H/VA:L/SC:N/SI:L/SA:LOther