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-2026-58057 Flowise - Custom MCP Environment Variable Denylist Bypass via Case Sensitivity

Flowise before 3.1.3 validates Custom MCP stdio environment variables against a denylist using a case-sensitive comparison, so on Windows, where environment names are case-insensitive, supplying 'nodeoptions' bypasses the NODEOPTIONS denylist entry. An authenticated user who can configure a Custo...

CVE-2026-58057

Flowise before 3.1.3 is affected: a case-sensitive denylist for Custom MCP stdio environment variables allows bypass on Windows (case-insensitive env names). An authenticated user who can configure a Custom MCP node can inject NODE_OPTIONS --require to execute arbitrary code in the Flowise server...

PT-2026-53089

Name of the Vulnerable Software and Affected Versions Flowise versions prior to 3.1.3 Description An authenticated user can execute arbitrary code in the server context by configuring a Custom MCP node. The issue occurs because environment variables are validated against a denylist using a...

EUVD-2025-210342

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...

CVE-2025-71336

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...

CVE-2025-71336

Flowise vulnerability: Unsandboxed remote code execution in Custom MCP. Affected: Flowise before 3.0.6 (2.2.7-patch.1 and earlier). Attack requires crafting a JSON payload and header x-request-from: internal to /api/v1/node-load-method/customMCP, taking advantage of minimal auth to execute OS com...

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

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...

PT-2026-52615

Name of the Vulnerable Software and Affected Versions Flowise versions prior to 3.0.6 Description The Custom MCP feature, used for executing OS commands like launching local MCP servers, is unsandboxed. Due to a minimal authentication and authorization model lacking role-based access control, and...

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...

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...

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...