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.
Scoring
- Severity
- MEDIUM
- CVSS base score
- 6
- 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
- CWE
- CWE-288
- Published
- 2026-09-08
- Last modified
- 2026-09-09
Affected products
- n8n-io n8n
- n8n-io n8n
- n8n-io n8n
Weakness type
Related vulnerabilities
- CVE-2026-83527 — An Authentication Bypass vulnerability in Sentry before R10.8.2, R10.7.3 and R10.6.4 allows a...
- CVE-2026-62650 — A vulnerability has been identified in Reyrolle 7SR5 (All versions < V2.70). Server-side...
- CVE-2026-76169 — fastify vulnerable to authentication bypass via malformed URLs reaching encapsulated not-found handlers
- CVE-2026-62916 — Microsoft Entra ID Elevation of Privilege Vulnerability
- CVE-2026-84777 — WordPress Really Simple SSL plugin <= 9.8.0 - 2FA Bypass vulnerability
- CVE-2026-16647 — Disable Login Page - Moderately critical - Access bypass - SA-CONTRIB-2026-111
- CVE-2026-81168 — CAPTCHA Protected Page - Moderately critical - Cookie Forgery - SA-CONTRIB-2026-105
- CVE-2026-82225 — WordPress RegistrationMagic plugin <= 6.0.9.8 - Broken Authentication vulnerability