cvedb.io
CVE-2026-27966
CRITICAL · CVSS 9.8
EPSS exploitation probability: 0%
Published 2026-02-26T02:16:23.833 · Last modified 2026-06-17T10:27:59.160

Summary

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 `allow_dangerous_code=True`, which automatically exposes LangChain’s Python REPL tool (`python_repl_ast`). 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). Version 1.8.0 fixes the issue.

Affected products

langflow — langflow

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References

This product uses data from the NVD API but is not endorsed or certified by the NVD. Informational only; not professional security advice.