| Component | n8n |
| Severity | medium (CVSS 5.5) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N |
| Published (NVD) | 2026-09-08 |
| Last modified | 2026-09-10 |
| Affected versions | n8n < 1.123.76 n8n >= 2.0.0, < 2.37.7 n8n >= 2.38.0, < 2.38.2 |
| Fixed in | 1.123.76, 2.37.7, 2.38.2 |
| Weakness | CWE-288 |
| CISA KEV | not listed |
NVD description
n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the public OIDC login and callback endpoints completed authentication even when OIDC was not the enabled active authentication method. An Enterprise administrator who had configured and later disabled an identity provider still exposed a working route that could issue valid sessions. The affected logic is packages/cli/src/modules/sso-oidc/oidc.service.ee.ts, including generateLoginUrl and the callback flow that lacked assertOidcLoginEnabled. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.
What to do
- Upgrade n8n to
1.123.76or later (or the patched release of your branch: 2.37.7, 2.38.2). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-86084
- https://github.com/n8n-io/n8n/security/advisories/GHSA-pf83-w3f9-8m37
- https://github.com/n8n-io/n8n/releases/tag/[email protected]
- https://github.com/n8n-io/n8n/releases/tag/[email protected]
- https://github.com/n8n-io/n8n/releases/tag/[email protected]
Read more
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