AIKIDO-2026-230523
langflow is vulnerable to Remote Code Execution (RCE)
98
Critical Risk
This Affects:
langflowTL;DR
The /api/v1/validate/code endpoint feeds the caller-supplied code parameter into validate_code, which compiles and exec()s each function definition as part of validation. Executing a definition evaluates decorators and default-argument expressions at definition time, so crafted payloads run arbitrary Python in the Langflow process without the function ever being called. An attacker who can reach this endpoint can achieve remote code execution on the host. The fix validates by compiling only and no longer executes untrusted code on the validation path.
Who does this affect?
You are affected if you are using a version that falls within the vulnerable range and expose Langflow so that callers can reach the code validation endpoint.
Background info
langflow is vulnerable to Remote Code Execution (RCE) in versions 0.0.19 - 1.10.0.
How to fix this
Upgrade the langflow library to the patch version.
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