cvedb.io
CVE-2026-33873
CRITICAL · CVSS 9.9
EPSS exploitation probability: 0%
Published 2026-03-27T21:17:23.953 · Last modified 2026-06-17T10:38:14.430

Summary

Langflow is a tool for building and deploying AI-powered agents and workflows. Prior to version 1.9.0, the Agentic Assistant feature in Langflow executes LLM-generated Python code during its validation phase. Although this phase appears intended to validate generated component code, the implementation reaches dynamic execution sinks and instantiates the generated class server-side. In deployments where an attacker can access the Agentic Assistant feature and influence the model output, this can result in arbitrary server-side Python execution. Version 1.9.0 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.