CVE-2026-27497: n8n has Potential Remote Code Execution via Merge Node
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 NODESEXCLUDE environment variable.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
Other sources
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 NODESEXCLUDE environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
— NVD
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-27497?
CVE-2026-27497 is considered a high severity vulnerability due to its potential for remote code execution.
How do I fix CVE-2026-27497?
To remediate CVE-2026-27497, upgrade n8n to version 2.10.1, 2.9.3, or 1.123.22.
Who is affected by CVE-2026-27497?
CVE-2026-27497 affects authenticated users with permission to create or modify workflows in n8n.
What are the possible impacts of CVE-2026-27497?
The impact of CVE-2026-27497 includes the ability for an authenticated user to execute arbitrary code and write files on the n8n server.
When was CVE-2026-27497 disclosed?
CVE-2026-27497 was disclosed in the advisories by GitHub and included in the n8n security reports.