| Component | n8n |
| Severity | critical (CVSS 9.9) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| Published (NVD) | 2026-06-23 |
| Last modified | 2026-06-24 |
| Affected versions | n8n < 1.123.43 n8n >= 2.0.0, < 2.20.7 n8n >= 2.21.0, < 2.22.1 |
| Fixed in | 1.123.43, 2.20.7, 2.22.1 |
| Weakness | CWE-1321 |
| CISA KEV | not listed |
NVD description
n8n is an open source workflow automation platform. Prior to 1.123.43, 2.22.1, and 2.20.7, an authenticated user with permission to create or modify workflows could achieve global prototype pollution via an unvalidated pagination parameter in the HTTP Request node. Combined with other techniques this could lead to RCE on the instance. This vulnerability is fixed in 1.123.43, 2.22.1, and 2.20.7.
What to do
- Upgrade n8n to
1.123.43or later (or the patched release of your branch: 2.20.7, 2.22.1). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
Read more
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