John Tromp

**Name of the Vulnerable Software and Affected Versions** Grin versions 3.0.0 through 3.0.0 before 4.0.0 is not a correct representation, since 3.0.0 is the start version and it should be represented as versions prior to 4.0.0. Grin versions prior to 4.0.0 **Description** The issue is related to insufficient validation of data related to Mimblewimble. **Recommendations** For Grin versions prior to 4.0.0, update to version 4.0.0 or later to resolve the issue.