CVE-2026-101861
Published:September 28, 2026
Updated:October 09, 2026
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 Packages
lfx (CONDA):
Affected version(s) >=1.10.1 <1.12.0Fix Suggestion:
Update to version 1.12.0https://github.com/langflow-ai/langflow.git (GITHUB):
Affected version(s) >=v1.0.16 <v1.12.0Fix Suggestion:
Update to version v1.12.0langflow-base (PYTHON):
Affected version(s) >=0.0.94 <1.12.0Fix Suggestion:
Update to version 1.12.0lfx (PYTHON):
Affected version(s) >=0.1.0 <1.12.0Fix Suggestion:
Update to version 1.12.0Additional Notes
The description of this vulnerability differs from MITRE.
Related Resources (5)
Do you need more information?
Contact UsCVSS v4
Base Score:
2.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Attack Requirements
PRESENT
Privileges Required
HIGH
User Interaction
NONE
Vulnerable System Confidentiality
LOW
Vulnerable System Integrity
LOW
Vulnerable System Availability
LOW
Subsequent System Confidentiality
NONE
Subsequent System Integrity
NONE
Subsequent System Availability
NONE
CVSS v3
Base Score:
4.1
Attack Vector
NETWORK
Attack Complexity
HIGH
Privileges Required
HIGH
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
LOW
Integrity
LOW
Availability
LOW
Weakness Type (CWE)
EPSS
Base Score:
0.20