Shedaniel

**Name of the Vulnerable Software and Affected Versions** Roughly Enough Items (REI) versions 16.0.729 and before **Description** The issue is related to a failure to validate slot index and decrement stack count in the Roughly Enough Items (REI) mod for Minecraft, allowing in-game item duplication. This is due to an Improper Validation of Specified Index, Position, or Offset in Input. A remote attack can cause a range error in the Item Handler. **Recommendations** For versions 16.0.729 and before, update to a version that contains a fix for this issue to prevent in-game item duplication. As a temporary workaround, consider restricting the use of the Item Handler to minimize the risk of exploitation.