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CVE-2025-71336— Flowise - Unsandboxed Remote Code Execution via Custom MCP

CVSS 9.8 · Critical EPSS 1.56% · P73

Affected Version Matrix 2

VendorProductVersion RangeStatus
FlowiseFlowise< 3.0.6affected
3.0.6unaffected
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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: CVE Program / CVE List V5
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: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Source: CVE Program / CVE List V5
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: CVE Program / CVE List V5
Vulnerability Title
FlowiseAI Flowise 命令注入漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
FlowiseAI Flowise是FlowiseAI公司开源的一个用于轻松构建 LLM 应用程序的工具。 FlowiseAI Flowise 3.0.6之前版本存在命令注入漏洞，该漏洞源于Custom MCP功能缺乏沙箱隔离，且认证和授权模型薄弱缺少基于角色的访问控制，默认安装未设置FLOWISE_USERNAME和FLOWISE_PASSWORD时运行无需身份验证，导致攻击者可通过向/api/v1/node-load-method/customMCP端点发送带有'x-request-from: int
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

VendorProductAffected VersionsCPESubscribe
FlowiseFlowise 0 ~ 3.0.6 -

II. Public POCs for CVE-2025-71336

#POC DescriptionSource LinkShenlong Link
AI-Generated POCPremium
Qwen3.6-35B-A3B · 6652 chars
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III. Intelligence Information for CVE-2025-71336

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Vendor Advisories for CVE-2025-71336 (2)

Same Patch Batch · Flowise · 2026-06-25 · 8 CVEs total

CVE-2025-7133810.0 CRITICALFlowise - Arbitrary File Write to Remote Code Execution via document-store API
CVE-2025-713349.8 CRITICALFlowise - Arbitrary File Access via Missing Chat Flow ID Validation
CVE-2025-713279.1 CRITICALFlowise - Authentication Bypass via Unprotected Registration Endpoint
CVE-2025-713288.3 HIGHFlowise - Unverified Password Change via Account Settings
CVE-2025-713358.1 HIGHFlowise - Session Invalidation Failure After Password Change
CVE-2025-713247.5 HIGHFlowise - Arbitrary File Read via chatId Parameter
CVE-2025-71333Flowise - Arbitrary File Upload via Unauthenticated /api/v1/attachments Endpoint

IV. Related Vulnerabilities

Same product: Flowise
Same vendor: Flowise
Same weakness: CWE-78

V. Comments for CVE-2025-71336

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