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

Severity: high (CVSS 8.8 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-02-25 · updated 2026-06-17
Weakness: CWE-89

Description

n8n is an open source workflow automation platform. Prior to versions 2.10.1, 2.9.3, and 1.123.22, 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. 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. If upgrading is not immediately possible, administrators should consider the following temporary mitigations. Limit workflow creation and editing permissions to fully trusted users only, and/or 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.

Affected products

n8n-io n8n: before 1.123.22; from 2.0.0 before 2.9.3; from 2.10.0 before 2.10.1 — fixed in 1.123.22, 2.10.1, 2.9.3

How to fix

Upgrade to a fixed version: n8n-io n8n 1.123.22, 2.10.1, 2.9.3. Check the vendor advisory for mitigations.

References

Get alerted when CVE-2026-27497 or the next vulnerability affects your stack