Description
n8n before 1.123.64, 2.x before 2.29.8, and before 2.30.1 contains a DOM-based cross-site scripting vulnerability in the HTML preview, which renders execution output into an iframe srcdoc without the sandbox attribute. A sanitizer bypass allows injected script to execute same-origin as the editor. When a victim opens the preview, the script can call authenticated APIs using the victim's session. An account with global:member privileges can exploit the issue.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | < 1.123.64, 2.30.0 – < 2.30.1, 2.0.0-rc.0 – < 2.29.8 | 1.123.64 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | < 1.123.64 | 1.123.64 | GHSA-p3rg-hrf9-w9gj |
| npm | n8n | >= 2.30.0, < 2.30.1 | 2.30.1 | GHSA-p3rg-hrf9-w9gj |
| npm | n8n | >= 2.0.0-rc.0, < 2.29.8 | 2.29.8 | GHSA-p3rg-hrf9-w9gj |
References
- GitHub Security Advisory (GHSA-p3rg-hrf9-w9gj) vendor-advisory
- VulnCheck Advisory: n8n before 1.123.64 DOM-Based XSS via Unsandboxed iframe third-party-advisory