PT-2026-92051 · Flowise · Flowise

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CVE-2026-91931

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Published

2026-09-15

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Updated

2026-09-16

CVSS v4.0

9.0

Critical

VectorAV:N/AC:H/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H
Name of the Vulnerable Software and Affected Versions Flowise versions prior to 3.1.4
Description An issue in the Custom MCP node allows authenticated attackers to achieve remote code execution. By supplying malicious npx package names through the mcpServerConfig parameter, an attacker can force the server to invoke npx with attacker-controlled npm packages, leading to arbitrary code execution on the server.
Recommendations Update to version 3.1.4.

Exploit

Fix

RCE

OS Command Injection

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Weakness Enumeration

Related Identifiers

CVE-2026-91931
GHSA-VCWP-F9RQ-3887

Affected Products

Flowise