Security Advisory

CVE-2026-73601

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-08-13 11:28:08

Last updated 2026-08-14 20:18:44

Assigner VulnCheck

CVSS score not scored

State PUBLISHED

Description

Flowise versions before 3.1.3 contain a remote code execution vulnerability in the Custom MCP node when CUSTOM_MCP_PROTOCOL is set to stdio, allowing authenticated users to execute arbitrary commands by manipulating environment variables and command arguments. Attackers can abuse PYTHONWARNINGS and BROWSER environment variables with python3, or leverage the root working directory with node to bypass validation and execute system commands.

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