Critical Code Injection Vulnerability in Langflow's CSV Agent Node
In February 2026, a critical Remote Code Execution (RCE) vulnerability, identified as CVE-2026-27966, was discovered in Langflow, an open-source platform for building AI-powered agents and workflows. This flaw resides in the CSV Agent node, which, prior to version 1.8.0, hardcoded the parameter `allow_dangerous_code=True`, inadvertently exposing LangChain’s Python REPL tool (`python_repl_ast`). This misconfiguration allows unauthenticated attackers to execute arbitrary Python and OS commands on the server via prompt injection, leading to full system compromise. ([sentinelone.com](https://www.sentinelone.com/vulnerability-database/cve-2026-27966/?utm_source=openai)) The rapid exploitation of this vulnerability underscores the critical need for organizations to promptly address security flaws in AI development tools. As AI platforms become integral to business operations, ensuring their security is paramount to prevent potential data breaches and operational disruptions.
Kill Chain