Description
n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL fields. Attackers can craft malicious credentials and trick victims into clicking the OAuth authorization button, executing arbitrary scripts in their browser session with the victim's privileges.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n | n8n | 2.7.0 – < 2.8.0, < 2.6.4 | 2.8.0 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | >= 2.7.0, < 2.8.0 | 2.8.0 | GHSA-364x-8g5j-x2pr |
| npm | n8n | < 2.6.4 | 2.6.4 | GHSA-364x-8g5j-x2pr |
Advisories 1
- WID-SEC-2026-0877 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jul 12, 2026
References
- GitHub Security Advisory (GHSA-364x-8g5j-x2pr) vendor-advisory
- VulnCheck Advisory: n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL third-party-advisory