CVE-2025-71336— Flowise - Unsandboxed Remote Code Execution via Custom MCP
Possible ATT&CK Techniques 2AI
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I. Basic Information for CVE-2025-71336
Vulnerability Information
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Vulnerability Title
Flowise - Unsandboxed Remote Code Execution via Custom MCP
Source: NVD (National Vulnerability Database)
Vulnerability Description
Flowise before 3.0.6 (affected versions 2.2.7-patch.1 and earlier) contains an unsandboxed remote code execution vulnerability in the Custom MCP feature, which is designed to execute OS commands such as launching local MCP servers. Because Flowise's authentication and authorization model is minimal and lacks role-based access control, and the default installation runs without authentication unless FLOWISE_USERNAME and FLOWISE_PASSWORD are set, an attacker can send a crafted JSON payload with the header 'x-request-from: internal' to the /api/v1/node-load-method/customMCP endpoint to execute arbitrary OS commands, resulting in complete compromise of the platform container or server.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: NVD (National Vulnerability Database)
Vulnerability Type
OS命令中使用的特殊元素转义处理不恰当(OS命令注入)
Source: NVD (National Vulnerability Database)
Affected Products
II. Public POCs for CVE-2025-71336
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Vendor Advisories for CVE-2025-71336 (1)
Other References for CVE-2025-71336 (1)
Same Patch Batch · Flowise · 2026-06-25 · 8 CVEs total
| CVE-2025-71338 | 10.0 CRITICAL | Flowise - Arbitrary File Write to Remote Code Execution via document-store API |
| CVE-2025-71334 | 9.8 CRITICAL | Flowise - Arbitrary File Access via Missing Chat Flow ID Validation |
| CVE-2025-71327 | 9.1 CRITICAL | Flowise - Authentication Bypass via Unprotected Registration Endpoint |
| CVE-2025-71328 | 8.3 HIGH | Flowise - Unverified Password Change via Account Settings |
| CVE-2025-71335 | 8.1 HIGH | Flowise - Session Invalidation Failure After Password Change |
| CVE-2025-71324 | 7.5 HIGH | Flowise - Arbitrary File Read via chatId Parameter |
| CVE-2025-71333 | Flowise - Arbitrary File Upload via Unauthenticated /api/v1/attachments Endpoint |
IV. Related Vulnerabilities
Same product: Flowise
- CVE-2025-71338
Flowise - Arbitrary File Write to Remote Code Execution via - CVE-2025-71334
Flowise - Arbitrary File Access via Missing Chat Flow ID Val - CVE-2025-71335
Flowise - Session Invalidation Failure After Password Change - CVE-2025-71333
Flowise - Arbitrary File Upload via Unauthenticated /api/v1/ - CVE-2025-71328
Flowise - Unverified Password Change via Account Settings
Same vendor: Flowise
- CVE-2025-71338
Flowise - Arbitrary File Write to Remote Code Execution via - CVE-2025-71335
Flowise - Session Invalidation Failure After Password Change - CVE-2025-71334
Flowise - Arbitrary File Access via Missing Chat Flow ID Val - CVE-2025-71333
Flowise - Arbitrary File Upload via Unauthenticated /api/v1/ - CVE-2025-71328
Flowise - Unverified Password Change via Account Settings
Same weakness: CWE-78
- CVE-2026-55441
mise: Arbitrary command execution via task-include files in - CVE-2026-55448
mise: Local credential_command executes untrusted config - CVE-2026-54636
Dokku: OS Command Injection via app.json managed Cron - CVE-2026-45408
Dokku: OS Command Injection via App Name in Git Pre-Receive - CVE-2026-40711
Dell Container Storage Modules v2.16.0 OS命令注入漏洞
V. Comments for CVE-2025-71336
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