1-Click RCE in Flowise (CVE-2026-40933)

Obsidian Security has disclosed a critical vulnerability (CVE-2026-40933) in Flowise that allows remote code execution via a single click. The flaw exploits the Model Context Protocol (MCP) in stdio mode, where unsanitized input can be leveraged to execute arbitrary commands on the server. This analysis details the attack vector, potential impact, and mitigation strategies to protect affected deployments.