AI agent vulnerability · n8n

CVE-2026-33660: n8n has Multiple Remote Code Execution Vulnerabilities in Merge Node AlaSQL SQL Mode

criticalCVSS 4.0 9.4 · 3.1 9.9GHSA-58qr-rcgv-642v

Impact An authenticated user with permission to create or modify workflows could use the Merge node's "Combine by SQL" mode to read local files on the n8n host and achieve remote code execution. The AlaSQL sandbox did not sufficiently restrict certain SQL statements, allowing an attacker to access sensitive files on the server or even compromise the intance.

Published Mar 25, 2026 · Updated Mar 30, 2026

Affected packages

n8n

Ecosystem: npm
Affected: = 2.14.0
Fixed in: 2.14.1
Check: npm ls n8n

n8n

Ecosystem: npm
Affected: >= 2.0.0-rc.0, < 2.13.3
Fixed in: 2.13.3
Check: npm ls n8n

n8n

Ecosystem: npm
Affected: < 1.123.27
Fixed in: 1.123.27
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 use the Merge node's "Combine by SQL" mode to read local files on the n8n host and achieve remote code execution. The AlaSQL sandbox did not sufficiently restrict certain SQL statements, allowing an attacker to access sensitive files on the server or even compromise the intance.

Patches

The issue has been fixed in n8n versions 2.14.1, 2.13.3, and 1.123.27. Users should upgrade to one of these versions 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 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 duddnr0615k, simonkoeck, c0rydoras, 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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