langflow-ai Langflow up to 1.11.x Component Toolkit schema.py ComponentToolkit.get_tools code injection

Summaryinfo

A vulnerability, which was classified as critical, was found in langflow-ai Langflow up to 1.11.x. The affected element is the function ComponentToolkit.get_tools of the file schema.py of the component Component Toolkit. Such manipulation leads to code injection. This vulnerability is listed as CVE-2026-101861. The attack may be performed from remote. There is no available exploit. You should upgrade the affected component.

Detailsinfo

A vulnerability was found in langflow-ai Langflow up to 1.11.x and classified as critical. Affected by this issue is the function ComponentToolkit.get_tools of the file schema.py of the component Component Toolkit. The manipulation with an unknown input leads to a code injection vulnerability. Using CWE to declare the problem leads to CWE-94. The product constructs all or part of a code segment using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the syntax or behavior of the intended code segment. Impacted is confidentiality, integrity, and availability. CVE summarizes:

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.

The advisory is available at github.com. This vulnerability is handled as CVE-2026-101861 since 09/28/2026. The exploitation is known to be easy. The attack may be launched remotely. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1059 by the MITRE ATT&CK project.

Upgrading to version 1.12.0 eliminates this vulnerability.

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Productinfo

Type

• Artificial Intelligence Software

Vendor

• langflow-ai

Name

• Langflow

Version

• 1.0
• 1.1
• 1.2
• 1.3
• 1.4
• 1.5
• 1.6
• 1.7
• 1.8
• 1.9
• 1.10
• 1.11

Website

• Product: https://github.com/langflow-ai/langflow/

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CPE 2.2info

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