Description
n8n before 1.123.83, 2.41.4, and 2.42.1 contains a stored cross-site scripting vulnerability in the file-preview modal, which re-publishes binary data as an unsandboxed same-origin blob URL. A member who uploads a crafted item can run script in the n8n origin of whoever previews it, typically the owner, and act with their session.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | < 1.123.83, 2.0.0 – < 2.41.4, 2.42.0 – < 2.42.1 | 1.123.83 |
Advisories 1
- WID-SEC-2026-3672 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 14, 2026
References
- GitHub Security Advisory (GHSA-29xw-66fq-4xc3) vendor-advisory
- VulnCheck Advisory: n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binary-Data File Preview third-party-advisory