CVE-2026-86084

Summary

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.

Affected Software

VendorProductVersion RangeStatus
n8n-ion8n>= 2.38.0, < 2.38.2affected
n8n-ion8n>= 2.0.0, < 2.37.7affected
n8n-ion8n< 1.123.76affected

Weaknesses

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

References