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bdu:2026-02171

EUVD-2026-267446

fkie_cve-2026-25056

n8n is an open source workflow automation platform. Prior to versions 1.118.0 and 2.4.0, a vulnerability in the Merge node's SQL Query mode allowed authenticated users with permission to create or modify workflows to write arbitrary files to the n8n server's filesystem potentially leading to remote code execution. This issue has been patched in versions 1.118.0 and 2.4.0.

GHSA-hv53-3329-vmrm — n8n Merge Node has Arbitrary File Write leading to RCE

Affected: npm: n8n

## Impact

A vulnerability in the Merge node's SQL Query mode allowed authenticated users with permission to create or modify workflows to write arbitrary files to the n8n server's filesystem potentially leading to remote code execution.

## Patches

The issue has been fixed in n8n version 2.4.0, 1.118.0. 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 or restrict use of the Merge node if not essential for operations. - Review workflows for suspicious use of the Merge node's SQL Query mode.

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

## **Resources**

- [n8n Documentation — Blocking nodes](https://docs.n8n.io/hosting/securing/blocking-nodes/) — how to globally disable specific nodes

--- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

NCSC-2026-0049 — Kwetsbaarheden verholpen in n8n

NCSC-2026-0049

WID-SEC-W-2026-0318 — n8n: Mehrere Schwachstellen

Ein entfernter, authentisierter oder anonymer Angreifer kann mehrere Schwachstellen in n8n ausnutzen, um beliebigen Code auszuführen, sich erhöhte Berechtigungen zu verschaffen, Cross-Site-Scripting-Angriffe durchzuführen und vertrauliche Informationen offenzulegen. Über einige dieser Schwachstellen sind weitere Angriffe möglich, wie beispielsweise die Übernahme von Konten, das Hijacking von Sitzungen und die vollständige Kompromittierung des Systems.