CVE-2026-86084 PUBLISHED

n8n: Disabled OIDC SSO Endpoints Remain Active and Issue Valid Sessions

Assigner: GitHub_M
Reserved: 04.09.2026 Published: 08.09.2026 Updated: 08.09.2026

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.

Metrics

CVSS Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:L/VA:N/SC:N/SI:N/SA:N
CVSS Score: 6

Product Status

Vendor n8n-io
Product n8n
Versions
  • Version >= 2.38.0, < 2.38.2 is affected
  • Version >= 2.0.0, < 2.37.7 is affected
  • Version < 1.123.76 is affected

References

Problem Types

  • CWE-288: Authentication Bypass Using an Alternate Path or Channel CWE