Flowise CSV Agent prompt injection leads to remote code execution

# Flowise CSV Agent prompt injection leads to remote code execution

https://gcdradar.vercel.app/incidents/flowise-csv-agent-prompt-injection-leads-to-remote-code-exec · AIR-2026-0873 · closed 2026-08-04

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability)
- Fix status: Fix status unknown
- First reported: 2026-08-04
- AI role: Attack on AI
- Products: Flowise
- CVE ids: CVE-2026-70477
- CVSS: 9.5

## Summary

A prompt injection vulnerability in Flowise chatflows using a CSV Agent node lets the model generate Python scripts that bypass validation. The code executes in an unsandboxed pyodide environment, enabling remote execution.

## What to do

No action recorded; read the sources below and the vendor's advisory.

## Latest updates

- 2026-08-04: CVE-2026-70477: Flowise is a drag & drop user interface to build a customized large language model flow. (https://nvd.nist.gov/vuln/detail/CVE-2026-70477)
- 2026-08-04: CVE-2026-70477: Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability (https://github.com/advisories/GHSA-5xvg-pmgg-3mxr)

## Sources

- 2026-08-04 GitHub Advisory Database: CVE-2026-70477: Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability https://github.com/advisories/GHSA-5xvg-pmgg-3mxr
- 2026-08-04 NVD: CVE-2026-70477: Flowise is a drag & drop user interface to build a customized large language model flow. https://nvd.nist.gov/vuln/detail/CVE-2026-70477

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.