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bdu:2026-02167

EUVD-2026-267451

fkie_cve-2026-25052

n8n is an open source workflow automation platform. Prior to versions 1.123.18 and 2.5.0, a vulnerability in the file access controls allows authenticated users with permission to create or modify workflows to read sensitive files from the n8n host system. This can be exploited to obtain critical configuration data and user credentials, leading to complete account takeover of any user on the instance. This issue has been patched in versions 1.123.18 and 2.5.0.

GHSA-gfvg-qv54-r4pc — n8n's Improper File Access Controls Allow Arbitrary File Read by Authenticated Users

Affected: npm: n8n

## Impact

A vulnerability in the file access controls allows authenticated users with permission to create or modify workflows to read sensitive files from the n8n host system. This can be exploited to obtain critical configuration data and user credentials, leading to complete account takeover of any user on the instance.

## Patches

The issue has been fixed in n8n version 1.123.18 and 2.5.0. 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. - Restrict access to nodes that interact with the file system, particularly the "Read/Write Files from Disk" and "Git" nodes.

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 backward 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.