CVE-2026-42232: n8n: XML Node Prototype Pollution to RCE
Impact An authenticated user with permission to create or modify workflows could achieve global prototype pollution via the XML Node leading to RCE when combined with other nodes exploiting the prototype pollution.
Patches The issue has been fixed in n8n versions 1.123.32, 2.17.4, and 2.18.1. 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 XML node by adding n8n-nodes-base.xml 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 1.123.32, 2.17.4, and 2.18.1, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via the XML Node leading to RCE when combined with other nodes exploiting the prototype pollution. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
— MITRE
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2026-42232?
CVE-2026-42232 is considered a critical vulnerability due to its potential for remote code execution through global prototype pollution.
How do I fix CVE-2026-42232?
To remediate CVE-2026-42232, upgrade n8n to versions 1.123.32, 2.17.4, or 2.18.1.
Who is affected by CVE-2026-42232?
CVE-2026-42232 affects authenticated users of n8n who have permissions to create or modify workflows.
What are the implications of CVE-2026-42232?
The implications of CVE-2026-42232 include the potential for an attacker to exploit prototype pollution to execute arbitrary code.
Is there a workaround for CVE-2026-42232?
Currently, the best practice is to upgrade to the patched versions as there are no known workarounds for CVE-2026-42232.