CVE-2026-33660 — Vulnerability in n8n — CVE Details

CRITICAL

n8n has Multiple Remote Code Execution Vulnerabilities in Merge Node AlaSQL SQL Mode

Published March 25, 2026Updated April 12, 2026Source: osv

Summary

## 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.

Advisory Timeline

First published March 25, 2026 (201 days ago).
Last revised April 12, 2026 — 17 days after initial publication.

Remediation

Upgrade to the fixed version using your package manager.

npm

Update n8n to 2.14.1 or later

npm install n8n@2.14.1

npm

Update n8n to 2.13.3 or later

npm install n8n@2.13.3

npm

Update n8n to 1.123.27 or later

npm install n8n@1.123.27

After upgrading, run your dependency scanner again to confirm the vulnerability is resolved.

Affected Packages (3)

Affects 1 ecosystem: npm (1).

Package	Ecosystem	Affected	Fixed In
n8n	npm	2.14.0	2.14.1
n8n	npm	All versions	2.13.3
n8n	npm	All versions	1.123.27

Vulnerability Classification

Common Weakness Enumeration (CWE) identifiers for this vulnerability type.

CWE-89
SQL InjectionMITRE
CWE-94
Code InjectionMITRE

CVSS Score Breakdown

What the CVSS (Common Vulnerability Scoring System) 9.9 score means for each attack dimension.

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

High

Integrity

High

Availability

High

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

References

Frequently Asked Questions

What is CVE-2026-33660?: n8n has Multiple Remote Code Execution Vulnerabilities in Merge Node AlaSQL SQL Mode This vulnerability has been assigned a severity rating of CRITICAL (CVSS score: 9.9/10).
How do I check if my project is affected by CVE-2026-33660?: CVE-2026-33660 affects n8n. Use GeekWala's free vulnerability scanner to check your dependencies against CVE-2026-33660 and 200,000+ other known vulnerabilities.

Severity & Exploitability

CVSS Score

9.9

Exploitation is straightforward and causes maximum impact. Patch immediately.

Also Known As

GHSA-58qr-rcgv-642v

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