| Component | n8n |
| Severity | critical (CVSS 10) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
| Published (NVD) | 2026-01-08 |
| Last modified | 2026-06-17 |
| Affected versions | n8n >= 1.65.0, < 1.121.0 |
| Fixed in | 1.121.0 |
| Weakness | CWE-20 |
| CISA KEV | not listed |
NVD description
n8n is an open source workflow automation platform. Versions starting with 1.65.0 and below 1.121.0 enable an attacker to access files on the underlying server through execution of certain form-based workflows. A vulnerable workflow could grant access to an unauthenticated remote attacker, resulting in exposure of sensitive information stored on the system and may enable further compromise depending on deployment configuration and workflow usage. This issue is fixed in version 1.121.0.
What to do
- Upgrade n8n to
1.121.0or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-21858
- https://github.com/n8n-io/n8n/security/advisories/GHSA-v4pr-fm98-w9pg
- https://www.cyera.com/research-labs/ni8mare-unauthenticated-remote-code-execution-in-n8n-cve-2026-21858
Read more
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