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OpenAdvisories
Critical · 9.4 CVE-2026-42232 EUVD-2026-27104GHSA-hqr4-h3xv-9m3r

n8n: XML Node Prototype Pollution to RCE

Published May 4, 2026 · Updated May 5, 2026 · Assigned by GitHub_M

Description

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.

Affected products

VendorProductAffectedFixed
n8n-io n8n < 1.123.32, >= 2.17.0, < 2.17.4, >= 2.18.0, < 2.18.1 —

Affected packages

EcosystemPackageAffectedFixedRecord
npm n8n >= 2.18.0, < 2.18.1 2.18.1 GHSA-hqr4-h3xv-9m3r
npm n8n >= 2.17.0, < 2.17.4 2.17.4 GHSA-hqr4-h3xv-9m3r
npm n8n < 1.123.32 1.123.32 GHSA-hqr4-h3xv-9m3r

Advisories 1

References