FlowiseAI Flowise up to 3.1.2 CSVAgent validatePythonCodeForDataFrame csvFile os command injection

Summaryinfo

A vulnerability was found in FlowiseAI Flowise up to 3.1.2 and classified as critical. Affected by this issue is the function validatePythonCodeForDataFrame of the component CSVAgent. The manipulation of the argument csvFile results in os command injection. This vulnerability is cataloged as CVE-2026-69264. The attack may be launched remotely. There is no exploit available.

Detailsinfo

A vulnerability, which was classified as critical, was found in FlowiseAI Flowise up to 3.1.2. Affected is the function validatePythonCodeForDataFrame of the component CSVAgent. The manipulation of the argument csvFile with an unknown input leads to a os command injection vulnerability. CWE is classifying the issue as CWE-78. The product constructs all or part of an OS command using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify the intended OS command when it is sent to a downstream component. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

Prior to 3.1.3, Flowise CSVAgent interpolates an attacker-controlled segment of the csvFile data URI directly into a Python source-code template that is then executed by Pyodide. Because Pyodide is loaded with the default js bridge to globalThis, which on Node.js exposes eval and dynamic import, the attacker can break out of the Python string literal, hand a JavaScript string to js.eval, dynamically import Node built-in modules such as fs and child_process, and execute arbitrary file I/O or OS commands as the Flowise process. The two validator paths around this code, validatePythonCodeForDataFrame and validateCustomReadCSVFunction, are never applied to the bootstrap template. A workspace user with chatflows:create or agentflows/chatflows update permission can plant a CSV Agent node with a crafted csvFile; once the chatflow is exposed via POST /api/v1/prediction/:id, any unauthenticated request triggers host remote code execution. This issue is fixed in version 3.1.3.

The advisory is available at github.com. This vulnerability is traded as CVE-2026-69264 since 08/03/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Technical details are known, but there is no available exploit. This vulnerability is assigned to T1202 by the MITRE ATT&CK project.

Upgrading to version 3.1.3 eliminates this vulnerability.

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Productinfo

Vendor

• FlowiseAI

Name

• Flowise

Version

• 3.1.0
• 3.1.1
• 3.1.2

Website

• Product: https://github.com/FlowiseAI/Flowise/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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