PYSEC-2026-376 Langflow has Remote Code Execution in CSV Agent

Summary The CSV Agent node in Langflow hardcodes allowdangerouscode=True, which automatically exposes LangChain’s Python REPL tool pythonreplast. As a result, an attacker can execute arbitrary Python and OS commands on the server via prompt injection, leading to full Remote Code Execution RCE...

Arbitrary Code Injection

Overview lfx is a lfx is a command-line tool for running Langflow workflows. It provides two main commands: serve and run. Affected versions of this package are vulnerable to Arbitrary Code Injection via the allowdangerouscode=True which automatically exposes LangChain’s Python REPL tool...

CVE-2026-27966

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.8.0, the CSV Agent node in Langflow hardcodes allowdangerouscode=True, which automatically exposes LangChain’s Python REPL tool pythonreplast. As a result, an attacker can execute arbitrary Python an...