module

Flowise Custom MCP Remote Code Execution

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Disclosed
Aug 14, 2025
Created
Nov 22, 2025

Description

This module exploits a remote code execution vulnerability in Flowise versions >= 2.2.7-patch.1
and located in packages/components/nodes/tools/MCP/CustomMCP/CustomMCP.ts and packages/components/nodes/tools/MCP/core.ts,
which allows users to execute arbitrary commands via StdioClientTransport by using the 'x-request-from: internal' header.
When FLOWISE_USERNAME and FLOWISE_PASSWORD are not configured, the exploit works unauthenticated. If Basic Auth is
enabled, the FLOWISE_USERNAME and FLOWISE_PASSWORD options must be set to provide credentials.

Authors

Assaf Levkovich
Valentin Lobstein [email protected]

Platform

Linux,Unix,Windows

Architectures

cmd

References

Module Options

To display the available options, load the module within the Metasploit console and run the commands 'show options' or 'show advanced':


    msf > use exploit/multi/http/flowise_custommcp_rce
    msf exploit(flowise_custommcp_rce) > show targets
        ...targets...
    msf exploit(flowise_custommcp_rce) > set TARGET < target-id >
    msf exploit(flowise_custommcp_rce) > show options
        ...show and set options...
    msf exploit(flowise_custommcp_rce) > exploit
Title
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