AI AgentHigh
CVE-2026-27966: Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.8.…
- Occurred
- Feb 26, 2026
- Published
- Feb 26, 2026
- Source
- NVD CVE
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.
Tags
- CVE
- CVE-2026-27966
- cvss:CRITICAL
Classification
Category confidence: 90%
Severity confidence: 90%
Rationale: Langflow AI agent tool vulnerability allows remote code execution via prompt injection, enabling full server compromise.
Classifier: Qwen/Qwen3.5-35B-A3B-FP8