GHSA-q4fm-pjq6-m63g: n8n has a Stored XSS Vulnerability in its Form Trigger

n8n, a workflow automation platform, has a stored XSS vulnerability (cross-site scripting, where malicious code is saved and runs when users visit a page) in its Form Trigger node that allows authenticated users to inject harmful scripts into forms. These scripts execute every time someone visits the published form, potentially hijacking form submissions or conducting phishing attacks, though the platform's Content Security Policy (a browser security feature that restricts what scripts can do) prevents direct theft of session cookies.