---
id: CVE-2026-69264
title: >-
  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
summary: >-
  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 gl…
severity: critical
cvss: 9.8
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'
cwe:
  - CWE-94
  - CWE-95
vendor: flowiseai
product: flowise
affected:
  - flowise < 3.1.3
patched:
  - flowise 3.1.3
published: '2026-08-04'
updated: '2026-09-14'
sourceUpdated: '2026-09-14T19:20:36.803'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-69264'
references:
  - url: >-
      https://github.com/FlowiseAI/Flowise/commit/f4e2794f6a576b94578f2fdafbf49c2fb304626c
    label: security-advisories@github.com
  - url: 'https://github.com/FlowiseAI/Flowise/pull/6499'
    label: security-advisories@github.com
  - url: 'https://github.com/FlowiseAI/Flowise/releases/tag/flowise@3.1.3'
    label: security-advisories@github.com
  - url: >-
      https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-4j8x-x6v7-w9rq
    label: security-advisories@github.com
  - url: >-
      https://github.com/FlowiseAI/Flowise/security/advisories/GHSA-4j8x-x6v7-w9rq
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
  - url: 'https://github.com/advisories/GHSA-4j8x-x6v7-w9rq'
tags:
  - nvd
  - ghsa
  - npm
epss: 0.01161
epssPercentile: 0.65831
aliases:
  - GHSA-4j8x-x6v7-w9rq
ecosystem: npm
ingestedAt: '2026-08-04T18:41:08.145Z'
---

## Overview

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.

## Affected

- `flowise < 3.1.3`

## Remediation

Upgrade past the affected range:

- `flowise 3.1.3`

## Package advisory (CVE-2026-69264)

Affected packages:

- `flowise <= 3.1.2`
- `flowise-components <= 3.1.2`

Patched in:

- `flowise 3.1.3`
- `flowise-components 3.1.3`

Source: https://github.com/advisories/GHSA-4j8x-x6v7-w9rq