CVE-2026-91931

High8.5Published on September 15, 2026

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.

CVSS score8.5 / 10CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weakness type (CWE)CWE-78

Vulnerabilities

Exploited Cisco ISE Flaw Leads a Wave of Attacks on Trusted Software Channels

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Sep 21, 202617:436 min readRead

This product uses the NVD API but is not endorsed or certified by the NVD.

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