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.

n8n has Prototype Pollution in XML Webhook Body Parser that Leads to RCE

Уязвимость платформы для автоматизации рабочих процессов N8n, связанная с неконтролируемым изменением атрибутов прототипа объекта, позволяющая нарушителю выполнить произвольный код