CVE-2026-69255

published 2026-08-04

CVE-2026-69255: Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in…

Priority P3 57 critical 9.2 CVSS 4.0

AV N AC L AT P PR N UI N VC H VI H VA H SC N SI N SA N E X CR X IR X AR X MAV X MAC X MAT X MPR X MUI X MVC X MVI X MVA X MSC X MSI X MSA X S X AU X R X V X RE X U X

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.3, the CSVAgent in packages/components/nodes/agents/CSVAgent/CSVAgent.ts extracted attacker-controlled CSV data with file.split(',').pop() and interpolated it directly into executable Python as base64_string = "${base64String}" before calling Pyodide. The validatePythonCodeForDataFrame() denylist only checked later LLM-generated code and did not validate this initial code block. An authenticated attacker could inject a closing quote followed by Python code, use Pyodide's js bridge to load Node.js child_process, and execute arbitrary operating system commands as root in the Flowise container. This issue is fixed in version 3.1.3.

Affected

3 ranges

Vendor	Product	Version range	Fixed in
flowiseai	flowise	< 3.1.3	3.1.3
flowiseai	flowise	>= 0 < 3.1.3	3.1.3
flowiseai	flowise-components	>= 0 < 3.1.3	3.1.3

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CWE-94