CVE-2026-41270— Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function Sandbox
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I. Basic Information for CVE-2026-41270
Vulnerability Information
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Vulnerability Title
Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function Sandbox
Source: NVD (National Vulnerability Database)
Vulnerability Description
Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, a Server-Side Request Forgery (SSRF) protection bypass vulnerability exists in the Custom Function feature. While the application implements SSRF protection via HTTP_DENY_LIST for axios and node-fetch libraries, the built-in Node.js http, https, and net modules are allowed in the NodeVM sandbox without equivalent protection. This allows authenticated users to bypass SSRF controls and access internal network resources (e.g., cloud provider metadata services) This vulnerability is fixed in 3.1.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:L
Source: NVD (National Vulnerability Database)
Vulnerability Type
访问控制不恰当
Source: NVD (National Vulnerability Database)
Vulnerability Title
Flowise 访问控制错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Flowise是FlowiseAI开源的一个用于轻松构建 LLM 应用程序的工具。 Flowise 3.1.0之前版本存在访问控制错误漏洞，该漏洞源于Custom Function功能中SSRF保护绕过，允许经过身份验证的用户绕过SSRF控制并访问内部网络资源。
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
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| FlowiseAI | Flowise | < 3.1.0 | - | |
| FlowiseAI | flowise-components | < 3.1.0 | - |
II. Public POCs for CVE-2026-41270
| # | POC Description | Source Link | Shenlong Link |
|---|
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Same Patch Batch · FlowiseAI · 2026-04-23 · 18 CVEs total
| CVE-2026-41267 | 8.1 HIGH | Flowise: Improper Mass Assignment in Account Registration Enables Unauthorized Organizatio |
| CVE-2026-41272 | 7.1 HIGH | Flowise: SSRF Protection Bypass (TOCTOU & Default Insecure) |
| CVE-2026-41269 | 7.1 HIGH | Flowise: File Upload Validation Bypass in createAttachment |
| CVE-2026-41268 | Flowise: Flowise Parameter Override Bypass Remote Command Execution | |
| CVE-2026-41274 | Flowise: Cypher Injection in GraphCypherQAChain | |
| CVE-2026-41277 | Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object | |
| CVE-2026-41264 | Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability | |
| CVE-2026-41137 | Flowise: Code Injection in CSVAgent leads to Authenticated RCE | |
| CVE-2026-41138 | Flowise: Remote code execution vulnerability in AirtableAgent.ts caused by lack of input v | |
| CVE-2026-41279 | Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credi | |
| CVE-2026-41273 | Flowise: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow | |
| CVE-2026-41278 | Flowise: Public chatflow endpoints return unsanitized flowData including plaintext API key | |
| CVE-2026-41275 | Flowise: Password Reset Link Sent Over Unsecured HTTP | |
| CVE-2026-41265 | Flowise: Airtable_Agent Code Injection Remote Code Execution Vulnerability | |
| CVE-2026-41266 | Flowise: Sensitive Data Leak in public-chatbotConfig | |
| CVE-2026-41276 | Flowise: AccountService resetPassword Authentication Bypass Vulnerability | |
| CVE-2026-41271 | Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains |
IV. Related Vulnerabilities
Same product: Flowise
- CVE-2026-8028
FlowiseAI Flowise Endpoint account.service.ts verify informa - CVE-2026-8027
FlowiseAI Flowise User Controller authorization - CVE-2026-8026
FlowiseAI Flowise API Response account.service.ts login info - CVE-2026-41274
Flowise: Cypher Injection in GraphCypherQAChain - CVE-2026-41264
Flowise: CSV Agent Prompt Injection Remote Code Execution Vu
Same vendor: FlowiseAI
- CVE-2026-8028
FlowiseAI Flowise Endpoint account.service.ts verify informa - CVE-2026-8027
FlowiseAI Flowise User Controller authorization - CVE-2026-8026
FlowiseAI Flowise API Response account.service.ts login info - CVE-2026-41274
Flowise: Cypher Injection in GraphCypherQAChain - CVE-2026-41264
Flowise: CSV Agent Prompt Injection Remote Code Execution Vu
Same weakness: CWE-284
- CVE-2026-42205
Avo: Broken Access Control: Unauthorized Execution of Arbitr - CVE-2026-41487
Langfuse: Improper role-based-access control in Langfuse LLM - CVE-2026-42278
UltraDAG: Smart Account Spending Policy Bypass via Pockets - CVE-2026-41646
Nuclei: Local File Read via require() Module Loader Bypass - CVE-2026-8127
eladmin Users API Endpoint UserController.java checkLevel ac
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