4.1Medium
CVE-2026-101861Langflow Code Execution via eval() in Component Input Schema
Description
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.
Data: CVE.org, NVD, CISA KEV, FIRST EPSS, Ubuntu. Published as the sources state it, in English.
Affected products and versions
| Vendor | Product | Versions | |
|---|---|---|---|
| langflow | langflow | 1.0.16 – < 1.12.0 | |
| langflow-ai | langflow | 1.0.16 – < 1.12.0, 0.0.94 – < 1.12.0 |
References and patches
- GitHub Security Advisory (GHSA-33p4-w7j3-33mw) vendor-advisory
- Release Notes release-notespatch