AI agent vulnerability · n8n

CVE-2026-27497: n8n has Potential Remote Code Execution via Merge Node

criticalCVSS 4.0 9.4 · 3.1 9.9GHSA-wxx7-mcgf-j869

Impact An authenticated user with permission to create or modify workflows could leverage the Merge node's SQL query mode to execute arbitrary code and write arbitrary files on the n8n server. Patches The issues have been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to one of these versions or later to remediate all known vulnerabilities.

Published Feb 25, 2026 · Updated Feb 27, 2026

Affected packages

n8n

Ecosystem: npm
Affected: < 1.123.22
Fixed in: 1.123.22
Check: npm ls n8n

n8n

Ecosystem: npm
Affected: >= 2.0.0, < 2.9.3
Fixed in: 2.9.3
Check: npm ls n8n

n8n

Ecosystem: npm
Affected: >= 2.10.0, < 2.10.1
Fixed in: 2.10.1
Check: npm ls n8n

Advisory details

From the GitHub Advisory Database (CC BY 4.0).

Impact

An authenticated user with permission to create or modify workflows could leverage the Merge node's SQL query mode to execute arbitrary code and write arbitrary files on the n8n server.

Patches

The issues have been fixed in n8n versions 2.10.1, 2.9.3, and 1.123.22. Users should upgrade to one of these versions or later to remediate all known vulnerabilities.

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 Merge node by adding n8n-nodes-base.merge to the NODES_EXCLUDE environment variable.

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

Credited to allsmog, nil340.

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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