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Critical

Flowise OS command remote code execution

  • Disclosed: 14.08.2025
  • Updated: 11.10.2026 10:22

The Custom MCPs feature is designed to execute OS commands, for instance, using tools like npx to spin up local MCP Servers. However, Flowise's inherent authentication and authorization model is minimal and lacks role-based access controls (RBAC). Furthermore, in Flowise versions before 3.0.1 the default installation operates without authentication unless explicitly configured. This combination allows unauthenticated network attackers to execute unsandboxed OS commands.

Affected software

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PlatformPackageVulnerable versionsFixed in
npm package flowise <= 3.0.5 no fix

References

CVSS score 9.8/10
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE)
CWE-306, CWE-78
Platform
npm
Package
flowise
Disclosed
14.08.2025
Updated
11.10.2026 10:22

Sources and licenses

OSV / GitHub Advisory Database - GHSA-2vv2-3x8x-4gv7 - CC BY 4.0

Vulnerability history: flowise

All published vulnerabilities of this package (npm package), newest first. Shows whether this is a one-off slip or a package that needs watching.

All (114) in the archive
Total entries
114
First → latest
04.2024 10.2026
Without a fix
16
Exploited in attacks
0

Severity breakdown

  • Critical 28
  • High 62
  • Medium 24

Disclosures per year

Severity:
  1. Flowise OS command remote code execution this entry
    Critical · 9.8 CVE-2025-8943 <= 3.0.5 no fix
  2. Flowise Prompt Injection to RCE and SSRF via CSV/Airtable Agent Python Validator Bypass
    Critical CVE-2026-73487 < 3.1.3 3.1.3
  3. Flowise NodeVM sandbox escape via puppeteer allowlist - authenticated RCE and arbitrary file read via Chromium
    Critical CVE-2026-73483 < 3.1.3 3.1.3
  4. Flowise: Unauthenticated OAuth2 token refresh endpoint returns access tokens — enables token theft for any connected service
    Critical CVE-2026-70478 < 3.1.3 3.1.3
  5. Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability
    Critical CVE-2026-70477 < 3.1.3 3.1.3
  6. Flowise: Broken Access Control in Stripe Subscription Endpoints Allows Cross-Tenant Billing Manipulation
    High CVE-2026-70476 < 3.1.3 3.1.3
  7. Flowise: Missing Authorization on Execution Update Endpoint
    High CVE-2026-70475 < 3.1.3 3.1.3
  8. Flowise: Cross-Workspace OAuth2 Credential Metadata Leak
    High CVE-2026-70474 < 3.1.3 3.1.3
  9. Flowise: Information Disclosure in GET /api/v1/upsert-history returns the entire server-wide upsert history
    High CVE-2026-70473 < 3.1.3 3.1.3
  10. Flowise: Cross-workspace credential IDOR in openai-assistants-vector-store
    High CVE-2026-70472 < 3.1.3 3.1.3
  11. Flowise: RCE via CSVAgent csvFile data URI base64 segment is interpolated into Python source without validation
    Critical CVE-2026-69264 < 3.1.3 3.1.3
  12. Flowise: Authenticated arbitrary file write in the `S3 Directory` document loader via unsanitized S3 object keys
    High ghsa-88pr-878c-24wf < 3.1.3 3.1.3
  13. Flowise: RBAC Bypass Leading to Unauthorized Workspace Variables Disclosure
    High CVE-2026-70471 < 3.1.3 3.1.3
  14. Flowise: Pyodide validator Unicode homoglyph bypass leads to RCE
    Critical CVE-2026-70470 < 3.1.3 3.1.3
  15. Flowise: CVE-2025-8943 Patch Bypass: npm_config_yes bypasses MCP environment variable blocklist (Unauthenticated RCE)
    High CVE-2026-69263 < 3.1.3 3.1.3
  16. Flowise: `DELETE /api/v1/chatflows/:id` does not validate resource type, allowing `agentflows:delete` and `chatflows:delete` to delete each other’s flow type
    High CVE-2026-69262 < 3.1.3 3.1.3
  17. Flowise RCE via SQLite Record Manager Node
    Critical CVE-2026-69259 < 3.1.3 3.1.3
  18. Flowise: Unauthenticated Property Injection into Flow Execution Context via Ungated `overrideConfig` Spread in Prediction API
    High CVE-2026-69258 < 3.1.3 3.1.3
  19. Flowise: SSRF Protection Bypass via IPv4-Mapped IPv6 Addresses
    High CVE-2026-69257 < 3.1.3 3.1.3
  20. Flowise: Remote Code Execution Vulnerability in CSVAgent
    Critical CVE-2026-69256 < 3.1.3 3.1.3
  21. Flowise: CSV Agent Remote Code Execution via Pyodide Code Injection — Root Shell Verified
    Critical CVE-2026-69255 < 3.1.3 3.1.3
Show more (20) Showing 21 of 90

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