Description
n8n before 1.123.83 contains an authorization bypass vulnerability that allows authenticated members to spoof workflow identity by supplying a trusted identifier in Execute Sub-workflow inline JSON mode. Attackers can set this identifier to resolve credentials from projects they do not belong to and modify another workflow's static data and error-workflow dispatch.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | < 1.123.83 | 1.123.83 |
Advisories 1
- WID-SEC-2026-3672 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Oct 14, 2026
References
- GitHub Security Advisory (GHSA-866p-xg8v-g2q7) vendor-advisory
- VulnCheck Advisory: n8n before 1.123.83 Authorization Bypass via Execute Sub-workflow Inline JSON third-party-advisory