| Component | n8n |
| Severity | high (CVSS 7.1) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:L |
| Published (NVD) | 2026-07-09 |
| Affected versions | n8n < 1.123.61 n8n >= 2.0.0, < 2.27.4 n8n = 2.28.0 |
| Fixed in | 1.123.61, 2.27.4 |
| Weakness | CWE-1321 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade n8n to
1.123.61or later (or the patched release of your branch: 2.27.4). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-59206
- https://github.com/n8n-io/n8n/security/advisories/GHSA-75qm-gp28-rcq9
- https://github.com/n8n-io/n8n/releases/tag/n8n%402.27.4
- https://github.com/n8n-io/n8n/releases/tag/n8n%402.28.1
Read more
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