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GHSA-wrwr-h859-xh2r

n8n Has an XML Node Prototype Pollution Patch Bypass

Source: GitHub Advisory Database (reviewed) Critical CVE-2026-44791

Packages

EcosystemPackageAffectedFixed in
npm n8n < 1.123.43 1.123.43
npm n8n >= 2.21.0, < 2.22.1 2.22.1
npm n8n >= 2.0.0-rc.0, < 2.20.7 2.20.7

Details

As written in the advisory (Markdown source, shown as plain text).

## Impact An authenticated user with permission to create or modify workflows could bypass the patch for GHSA-hqr4-h3xv-9m3r in the XML node. When combined with other nodes, this could lead to RCE on the n8n host. ## Patches The issue has been fixed in n8n versions 1.123.43, 2.20.7, and 2.22.1. 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 `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures. --- n8n has adopted CVSS 4.0 as primary score for all security advisories. CVSS 3.1 vector strings are provided for backwards compatibility. CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

References

External links from the advisory. They lead to third-party sites.