Description
n8n is an open source workflow automation platform. Prior to 1.123.61, 2.27.4, and, 2.28.1, an authenticated user with the default workflow:create permission could pollute Object.prototype through a crafted workflow saved, updated, or imported via the workflow API, allowing unauthenticated requests to be treated as a privileged user and exposing user and project listing endpoints. This issue is fixed in versions 1.123.61, 2.27.4, and 2.28.1.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | >= 2.28.0, < 2.28.1, >= 2.0.0-rc.0, < 2.27.4, < 1.123.61 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | < 1.123.61 | 1.123.61 | GHSA-75qm-gp28-rcq9 |
| npm | n8n | >= 2.28.0, < 2.28.1 | 2.28.1 | GHSA-75qm-gp28-rcq9 |
| npm | n8n | >= 2.0.0-rc.0, < 2.27.4 | 2.27.4 | GHSA-75qm-gp28-rcq9 |
Advisories 2
- WID-SEC-2026-2067 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 15, 2026
- NCSC-2026-0228 Kwetsbaarheden verholpen in n8n workflow automation platform NCSC-NL (Netherlands) · Jul 13, 2026