CVE-2026-101861
Langflow Code Execution via eval() in Component Input Schema
CVSS Score
4.1
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-95 CWE-94 |
| Vendor | langflow-ai |
| Product | langflow |
| Published | Sep 28, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:L/I:L/A:L Attack Vector
Network
Attack Complexity
High
Privileges Required
High
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
Low
Availability
Low
Affected Versions
langflow-ai / langflow
1.0.16 < 1.12.0 0.0.94 < 1.12.0
References
Credits
Weblover VulnCheck