CVE-2026-41269— Flowise: File Upload Validation Bypass in createAttachment
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I. Basic Information for CVE-2026-41269
Vulnerability Information
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Vulnerability Title
Flowise: File Upload Validation Bypass in createAttachment
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, the Chatflow configuration file upload settings can be modified to allow the application/javascript MIME type. This lets an attacker upload .js files even though the frontend doesn’t normally allow JavaScript uploads. This enables attackers to persistently store malicious Node.js web shells on the server, potentially leading to Remote Code Execution (RCE). This vulnerability is fixed in 3.1.0.
Source: NVD (National Vulnerability Database)
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:H/A:N
Source: NVD (National Vulnerability Database)
Vulnerability Type
危险类型文件的不加限制上传
Source: NVD (National Vulnerability Database)
Vulnerability Title
Flowise 代码问题漏洞
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之前版本存在代码问题漏洞，该漏洞源于Chatflow配置文件上传设置可修改为允许application/javascript MIME类型，导致攻击者上传恶意.js文件。
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
II. Public POCs for CVE-2026-41269
| # | 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-2026-41270 | 7.1 HIGH | Flowise: SSRF Protection Bypass via Unprotected Built-in HTTP Modules in Custom Function S |
| CVE-2026-41272 | 7.1 HIGH | Flowise: SSRF Protection Bypass (TOCTOU & Default Insecure) |
| CVE-2026-41276 | Flowise: AccountService resetPassword Authentication Bypass Vulnerability | |
| CVE-2026-41266 | Flowise: Sensitive Data Leak in public-chatbotConfig | |
| CVE-2026-41265 | Flowise: Airtable_Agent Code Injection Remote Code Execution Vulnerability | |
| CVE-2026-41275 | Flowise: Password Reset Link Sent Over Unsecured HTTP | |
| CVE-2026-41278 | Flowise: Public chatflow endpoints return unsanitized flowData including plaintext API key | |
| CVE-2026-41271 | Flowise: APIChain Prompt Injection SSRF in GET/POST API Chains | |
| CVE-2026-41268 | Flowise: Flowise Parameter Override Bypass Remote Command Execution | |
| CVE-2026-41279 | Flowise: Unauthenticated TTS endpoint accepts arbitrary credential IDs — enables API credi | |
| CVE-2026-41138 | Flowise: Remote code execution vulnerability in AirtableAgent.ts caused by lack of input v | |
| CVE-2026-41137 | Flowise: Code Injection in CSVAgent leads to Authenticated RCE | |
| CVE-2026-41264 | Flowise: CSV Agent Prompt Injection Remote Code Execution Vulnerability | |
| CVE-2026-41277 | Flowise: Mass Assignment in DocumentStore Create Endpoint Leads to Cross-Workspace Object | |
| CVE-2026-41273 | Flowise: Unauthenticated OAuth 2.0 Access Token Disclosure via Public Chatflow | |
| CVE-2026-41274 | Flowise: Cypher Injection in GraphCypherQAChain |
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-434
- CVE-2021-47943
TextPattern CMS 4.8.7 Remote Code Execution via File Upload - CVE-2021-47937
e107 CMS 2.3.0 Authenticated Remote Code Execution via Theme - CVE-2026-41517
Emlog: Remote Code Execution via Malicious Plugin Upload - CVE-2026-6692
Slider Revolution 7.0.0 - 7.0.10 - Authenticated (Subscriber - CVE-2026-41587
CI4MS: Unrestricted PHP File Upload via Theme Installation L
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