GHSA-w673-8fjw-457c: n8n: Authenticated XSS and Open Redirect via Form Node

March 27, 2026

An authenticated user with permission to create or modify workflows could configure a Form Node with an unsanitized HTML description field or exploit an overly permissive iframe sandbox policy to perform stored cross-site scripting or redirect end users visiting the form to an arbitrary external URL. The vulnerability could be used to facilitate phishing attacks.

References

github.com/advisories/GHSA-w673-8fjw-457c
github.com/n8n-io/n8n
github.com/n8n-io/n8n/security/advisories/GHSA-w673-8fjw-457c

Code Behaviors & Features

Detect and mitigate GHSA-w673-8fjw-457c with GitLab Dependency Scanning

Secure your software supply chain by verifying that all open source dependencies used in your projects contain no disclosed vulnerabilities. Dependency Scanning using SBOM also detects vulnerabilities from proprietary advisories that this site does not include. Learn more about Dependency Scanning using SBOM →