XSS Vulnerability in n8n Workflow Automation Platform

CVE-2026-25054

What is CVE-2026-25054?

n8n, an open-source workflow automation platform, had a Cross-Site Scripting (XSS) vulnerability in its markdown rendering component prior to versions 1.123.9 and 2.2.1. This flaw allowed authenticated users with the ability to create or edit workflows to inject malicious scripts into workflow sticky notes and other markdown-supported interface areas. When another user interacted with a crafted workflow, the attacker could execute scripts with same-origin privileges, potentially leading to session hijacking and unauthorized access to accounts. This issue affects the security and integrity of user interactions within the n8n platform.

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References