CVE-2026-42231
HighSummary
n8n is a workflow automation platform that prior to versions 1.123.32, 2.17.4, and 2.18.1 had a flaw in the xml2js library allowing prototype pollution via a crafted XML payload. An authenticated user with the right permissions could exploit this to achieve remote code execution on the n8n host.
Risk Assessment
This vulnerability poses a significant risk to organizations as it allows authenticated users to execute remote code, potentially leading to system compromise.
Recommendation
It is recommended to upgrade n8n to versions 1.123.32, 2.17.4, or 2.18.1 to mitigate this security issue.
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Original NVD description (English source)
n8n is an open source workflow automation platform. Prior to versions 1.123.32, 2.17.4, and 2.18.1, a flaw in the xml2js library used to parse XML request bodies in n8n's webhook handler allowed prototype pollution via a crafted XML payload. An authenticated user with permission to create or modify workflows could exploit this to pollute the JavaScript object prototype and, by chaining the pollution with the Git node's SSH operations, achieve remote code execution on the n8n host. This issue has been patched in versions 1.123.32, 2.17.4, and 2.18.1.
Vulnerability data from NVD (NIST) · CISA KEV · EPSS

