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.
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Mon, 04 May 2026 21:15:00 +0000
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Mon, 04 May 2026 19:00:00 +0000
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| Description | 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. | |
| Title | n8n: Prototype Pollution in XML Webhook Body Parser Leads to RCE | |
| Weaknesses | CWE-1321 | |
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cvssV4_0
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-05-04T20:18:06.009Z
Reserved: 2026-04-25T05:37:12.117Z
Link: CVE-2026-42231
Updated: 2026-05-04T20:18:00.893Z
Status : Received
Published: 2026-05-04T19:16:05.417
Modified: 2026-05-04T19:16:05.417
Link: CVE-2026-42231
No data.
OpenCVE Enrichment
Updated: 2026-05-04T21:00:09Z