CVE-2026-42231

n8n (open source workflow automation platform) is affected by CVE-2026-42231 due to a prototype pollution flaw in the xml2js XML request body parser within the webhook handler. The vulnerability, exploitable by an authenticated user with permission to create or modify workflows, can be chained wi...

CVE-2026-42231 n8n: Prototype Pollution in XML Webhook Body Parser Leads to RCE

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 modi...