CVE-2026-110842 n8n before 2.41.4 and 2.42.1 Prototype Pollution via MCP Workflow-Validation Interpreter

n8n before 2.41.4 and 2.42.x before 2.42.1 contains a prototype pollution vulnerability in the MCP workflow-validation tool, whose interpreter evaluates caller-supplied code in the main process, reads inherited properties, and permits assignment onto shared prototypes. An authenticated member...

CVE-2026-110842

The n8n workflow automation tool (versions before 2.41.4 and 2.42.x before 2.42.1 ) is vulnerable to a prototype pollution vulnerability within the MCP workflow-validation tool . The root cause is that the tool's interpreter evaluates caller-supplied code in the main process, allowing for the rea...