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AI agent vulnerability · n8n

CVE-2026-25056: n8n Merge Node has Arbitrary File Write leading to RCE

criticalCVSS 4.0 9.4GHSA-hv53-3329-vmrm

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.

Published Feb 4, 2026

Affected packages

n8n

Ecosystem
npm
Affected
< 1.118.0
Fixed in
1.118.0
Check
npm ls n8n

n8n

Ecosystem
npm
Affected
>= 2.0.0, < 2.4.0
Fixed in
2.4.0
Check
npm ls n8n

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

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 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

Credited to nlgbao1340.

References

How this page is made: the data panel comes from the GitHub Advisory Database, CISA’s KEV catalog, the NVD and FIRST EPSS, and updates twice a day. No analysis has been written for this entry yet. Methodology

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