CVEvulnerability

CVE-2026-73601

9.0 CRITICAL Published 2026-08-13 Modified 2026-10-24 Official page ↗
Status
Analyzed
Published
2026-08-13
Last modified
2026-10-24
Assigner
[email protected]
CVSS 4.0 ([email protected])
9.0 CRITICAL — CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
CVSS 3.1 ([email protected])
8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-95

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.

Affected configurations

• flowiseai flowise (< 3.1.3)

Related

Weakness · CWE (1)

  • CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code weakness

References