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 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.

CVSS v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c	Patch
https://github.com/FlowiseAI/Flowise/pull/6499	Issue Tracking Patch
https://github.com/FlowiseAI/Flowise/releases/tag/flowise%403.1.3	Patch Release Notes
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-vmv7-4m6c-3cg5	Exploit Vendor Advisory
https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-vmv7-4m6c-3cg5	Exploit Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:flowiseai:flowise:*:*:*:*:*:*:*:*

History

No history.

Information

Published : 2026-08-04 17:17

Updated : 2026-09-14 19:58

NVD link : CVE-2026-69255

Mitre link : CVE-2026-69255

CVE.ORG link : CVE-2026-69255

JSON object : View

Products Affected

flowiseai

flowise

CWE

CWE-94

Improper Control of Generation of Code ('Code Injection')

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