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EUVD-2026-329310

fkie_cve-2026-54312

n8n is an open source workflow automation platform. Prior to 2.24.0, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via the Microsoft SQL node by supplying a crafted value as the table parameter. This pollutes Object.prototype process-wide for the lifetime of the n8n server process, causing application-wide validation failures and rendering the n8n instance completely non-functional until restarted. This vulnerability is fixed in 2.24.0.

GHSA-x6p3-m6h9-fx7r — n8n: Microsoft SQL Node Prototype Pollution

Affected: npm: n8n

## Impact An authenticated user with permission to create or modify workflows could achieve global prototype pollution via the Microsoft SQL node by supplying a crafted value as the table parameter. This pollutes `Object.prototype` process-wide for the lifetime of the n8n server process, causing application-wide validation failures and rendering the n8n instance completely non-functional until restarted.

## Patches The issue has been fixed in n8n version 2.24.0. Users should upgrade to this version or later to remediate the vulnerability.

## Workarounds If upgrading is not immediately possible, administrators should consider the following temporary mitigations: - Limit workflow creation and editing permissions to fully trusted users only. - Disable the Microsoft SQL node by adding `n8n-nodes-base.microsoftSql` to the `NODES_EXCLUDE` environment variable.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

NCSC-2026-0212 — Kwetsbaarheden verholpen in n8n workflow automation platform

NCSC-2026-0212

WID-SEC-W-2026-1875 — n8n: Mehrere Schwachstellen

Ein Angreifer kann mehrere Schwachstellen in n8n ausnutzen, um beliebigen Code auszuführen, Sicherheitsmaßnahmen zu umgehen, SQL-Injection- und Cross-Site-Scripting-Angriffe durchzuführen, Daten zu manipulieren, einen Denial-of-Service-Zustand zu verursachen oder vertrauliche Informationen offenzulegen, was weitere Angriffe einschließlich einer Rechteausweitung ermöglichen kann.