Flowise patch bypass allows unauthenticated RCE via npm_config_yes

# Flowise patch bypass allows unauthenticated RCE via npm_config_yes

https://gcdradar.vercel.app/incidents/flowise-patch-bypass-allows-unauthenticated-rce-via-npm-conf · AIR-2026-0881 · 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-2026-69263
- CVSS: 8.7

## Summary

A patch bypass vulnerability in Flowise allows unauthenticated remote code execution by leveraging npm environment variables to bypass MCP blocklists. Attackers can auto-install arbitrary packages using npm_config_yes.

## What to do

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

## Latest updates

- 2026-08-04: CVE-2026-69263: Flowise is a drag & drop user interface to build a customized large language model flow. (https://nvd.nist.gov/vuln/detail/CVE-2026-69263)
- 2026-08-04: CVE-2026-69263: Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE) (https://github.com/advisories/GHSA-xc48-889x-5qmw)

## Sources

- 2026-08-04 GitHub Advisory Database: CVE-2026-69263: Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE) https://github.com/advisories/GHSA-xc48-889x-5qmw
- 2026-08-04 NVD: CVE-2026-69263: Flowise is a drag & drop user interface to build a customized large language model flow. https://nvd.nist.gov/vuln/detail/CVE-2026-69263

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