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CVE-2026-91931

Flowise before 3.1.4 Remote Code Execution via Custom MCP npx

CVSS 3.1 8.5 HIGHCVSS 4.0 9.0 CRITICALCheck source for fixed versionsKEV status unknown
Original advisory

cve-program · CVE-2026-91931

Published

Flowise before 3.1.4 contains a remote code execution vulnerability in the Custom MCP node that allows authenticated attackers to execute arbitrary code by supplying npx package names in the mcpServerConfig parameter. Attackers can invoke npx with attacker-controlled npm packages to execute code on the Flowise server.

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Affected versions, risk and source history

Exploitation and risk

Source status

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Advisory history

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23 Oct 2026 15:48:27 UTC

Flowise before 3.1.4 Remote Code Execution via Custom MCP npx

cve-program · CVE-2026-91931 · Published

ChangeIntel

An IT change radar: releases, security, known issues, retirements, documentation changes, and service status from public sources. Every item links to supporting evidence; dates and statuses can change after they are read.

Sources read 13 Nov 09:00 UTC · 274 of 275 readable · 272 fully read · documentation 469/469 current

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