CVE-2026-101861

Summary

Langflow 1.0.16 before 1.12.0 and 0.0.94 before 1.12.0 contain an unsafe eval() vulnerability in schema.py that allows authenticated attackers to achieve code execution by placing a Python object with a malicious repr method into component input options lists. The eval() sink is triggered when a component is converted into a LangChain tool via ComponentToolkit.get_tools(), including during custom component saves through the API, by interpolating options into a Literal type string that is passed directly to eval() without safe evaluation controls.

Affected Software

VendorProductVersion RangeStatus
langflow-ailangflow1.0.16 < 1.12.0affected
langflow-ailangflow0.0.94 < 1.12.0affected

Weaknesses

  • CWE-95: Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
  • CWE-94: Improper Control of Generation of Code ('Code Injection')

References