| 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) | 2026-01-08 |
| Last modified | 2026-06-17 |
| Affected versions | n8n >= 0.123.0, < 1.121.3 |
| Fixed in | 1.121.3 |
| Weakness | CWE-94CWE-434 |
| CISA KEV | not listed |
NVD description
n8n is an open source workflow automation platform. In versions 0.121.2 and below, an authenticated attacker may be able to execute malicious code using the n8n service. This could result in full compromise and can impact both self-hosted and n8n Cloud instances. This issue is fixed in version 1.121.3. Administrators can reduce exposure by disabling the Git node and limiting access for untrusted users, but upgrading to the latest version is recommended.
What to do
- Upgrade n8n to
1.121.3or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-21877
- https://github.com/n8n-io/n8n/security/advisories/GHSA-v364-rw7m-3263
- https://github.com/n8n-io/n8n/commit/f4b009d00d1f4ba9359b8e8f1c071e3d910a55f6
Read more
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