Vulnerability in N8n
CVE-2026-86084
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 5.5 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:L/A:N.
EPSS exploit prediction
EPSS: 0.005 (39.0th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 39.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.005 · newest: 0.005 · change: 0.000
Affected products
- N8n
- N8n-Io N8n — versions < 1.123.76, >= 2.0.0, < 2.37.7, >= 2.38.0, < 2.38.2
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-pf83-w3f9-8m37 (Mitigation, Vendor Advisory)
- github.com/n8n-io/n8n/releases/tag/n8n@1.123.76 (Release Notes)
- github.com/n8n-io/n8n/releases/tag/n8n@2.37.7 (Release Notes)
- github.com/n8n-io/n8n/releases/tag/n8n@2.38.2 (Release Notes)
Frequently asked questions
- What is CVE-2026-86084?
- CVE-2026-86084 is a medium-severity vulnerability in N8n, classified under Authentication Bypass Using an Alternate Path or Channel. CVSS score: 5.5/10. Published 2026-09-08.
- How severe is CVE-2026-86084?
- Medium severity. CVSS v3 base score is 5.5 out of 10.