A vulnerability has been identified in Mendix Applications using Mendix 9 (All versions >= V9.11 < V9.15), Mendix Applications using Mendix 9 (V9.12) (All versions < V9.12.3). An expression injection vulnerability was discovered in the Workflow subsystem of Mendix Runtime, that can affect the running applications. The vulnerability could allow a malicious user to leak sensitive information in a certain configuration.