Flowise - Remote Code Execution

Flowise 3.0.5 contains a remote code execution vulnerability caused by unsafe evaluation of user input in the CustomMCP node's convertToValidJSONString function, letting remote attackers execute arbitrary code with full Node.js privileges, exploit requires user input to be processed by the...

CVE-2026-56274

Flowise before 3.1.2 contains multiple OS command injection vulnerabilities in the Custom MCP Server feature due to incomplete command-flag validation and a regex bypass in local file access restrictions. An attacker with a Flowise account of any role, or API access with view/update permissions f...

EUVD-2026-38434

Flowise before 3.1.2 contains multiple OS command injection vulnerabilities in the Custom MCP Server feature due to incomplete command-flag validation and a regex bypass in local file access restrictions. An attacker with a Flowise account of any role, or API access with view/update permissions f...

Exploit for Code Injection in Flowiseai Flowise

CVE-2025-59528 PoC ⚠️ For educational and authorized securit...

CVE-2026-40933

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, due to unsafe serialization of stdio commands in the MCP adapter, an authenticated attacker can add an MCP stdio server with an arbitrary command, achieving command execution. The vulnerabilit...

CVE-2026-40933 Flowise: Authenticated RCE Via MCP Adapters

Flowise is a drag & drop user interface to build a customized large language model flow. Prior to 3.1.0, due to unsafe serialization of stdio commands in the MCP adapter, an authenticated attacker can add an MCP stdio server with an arbitrary command, achieving command execution. The vulnerabilit...

Exploit for Code Injection in Flowiseai Flowise

CVE-2025-59528 - FlowiseAI CustomMCP Remote Code Execution...

📄 Flowise JS Injection Remote Code Execution

This Metasploit module exploits a remote code execution vulnerability in Flowise versions greater than or equal to 2.2.7-patch.1 and less than 3.0.6. The vulnerability exists in the customMCP endpoint /api/v1/node-load-method/customMCP located in...

Flowise JS Injection RCE

This module exploits a remote code execution vulnerability in Flowise versions = 2.2.7-patch.1 and = 3.0.1, authentication via FLOWISEEMAIL and FLOWISEPASSWORD is required due to JWT token verification. Module Options msf use exploit/multi/http/flowisejsrce msf exploitflowisejsrce show targets...

Exploit for Code Injection in Flowiseai Flowise

CVE-2025-59528.yaml Flowise is a drag & drop user interface to...

GHSA-HMGH-466J-FX4C Flowise vulnerable to RCE via Dynamic function constructor injection

Summary User-controlled input flows to an unsafe implementaion of a dynamic Function constructor , allowing a malicious actor to run JS code in the context of the host not sandboxed leading to RCE. Details When creating a new Custom MCP Chatflow in the platform, the MCP Server Config displays a...

CVE-2025-59528

Flowise is a drag & drop user interface to build a customized large language model flow. In version 3.0.5, Flowise is vulnerable to remote code execution. The CustomMCP node allows users to input configuration settings for connecting to an external MCP server. This node parses the user-provided...

CVE-2025-59528 Flowise has Remote Code Execution vulnerability

Flowise is a drag & drop user interface to build a customized large language model flow. In version 3.0.5, Flowise is vulnerable to remote code execution. The CustomMCP node allows users to input configuration settings for connecting to an external MCP server. This node parses the user-provided...

CVE-2025-59528

Flowise 3.0.5 contains a remote code execution vulnerability in the CustomMCP node. The mcpServerConfig string is parsed and passed to the Function() constructor via convertToValidJSONString without validation, allowing an attacker to execute arbitrary JavaScript with Node.js privileges (e.g., ac...

CVE-2025-59528 Flowise has Remote Code Execution vulnerability

Flowise is a drag & drop user interface to build a customized large language model flow. In version 3.0.5, Flowise is vulnerable to remote code execution. The CustomMCP node allows users to input configuration settings for connecting to an external MCP server. This node parses the user-provided...

Flowise has unsandboxed remote code execution via Custom MCP

Summary 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, the default installation of...

Arbitrary Code Injection

Overview flowise-components is a Flowiseai Components Affected versions of this package are vulnerable to Arbitrary Code Injection via the convertToValidJSONString function. An attacker can execute arbitrary JavaScript code with full server privileges by supplying malicious input to the...

Flowise has Remote Code Execution vulnerability

Description Cause of the Vulnerability The CustomMCP node allows users to input configuration settings for connecting to an external MCP Model Context Protocol server. This node parses the user-provided mcpServerConfig string to build the MCP server configuration. However, during this process, it...

PT-2025-39075

Name of the Vulnerable Software and Affected Versions Flowise versions prior to 3.0.6 Description Flowise is a drag-and-drop user interface for building customized large language model flows. A critical issue exists in the CustomMCP node, which allows users to input configuration settings for...