CVE-2026-27966
Langflow has Remote Code Execution in CSV Agent
Severity by source
Trivy's own label is CRITICAL. Rated critical by GHSA.
Description
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 packages and fixed versions
| Source | Package | Fixed in |
|---|---|---|
| pip::GitHub Security Advisory pip | langflow | no fix listed |
References
- https://github.com/langflow-ai/langflow
- https://github.com/langflow-ai/langflow/commit/d8c6480daa17b2f2af0b5470cdf5c3d28dc9e508
- https://github.com/langflow-ai/langflow/security/advisories/GHSA-3645-fxcv-hqr4
- https://github.com/pypa/advisory-database/tree/main/vulns/langflow/PYSEC-2026-376.yaml
- https://nvd.nist.gov/vuln/detail/CVE-2026-27966
- https://pypi.org/project/langflow