CVE-2026-69255
Description
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.
How to fix
- flowiseai flowise3.1.3 or later
- flowise3.1.3 or later
- flowise-components3.1.3 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| flowiseai flowise | v < 3.1.3 | 3.1.3 |
| flowisenpm | v < 3.1.3 | 3.1.3 |
| flowise-componentsnpm | v < 3.1.3 | 3.1.3 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.