CVE-2026-56350

MEDIUM 6.3

n8n - SSO Enforcement Bypass via API

CVSS Score

6.3

EPSS Score

0.0%

EPSS Percentile

0th

n8n before 2.8.0 contains an authentication bypass vulnerability allowing authenticated SSO users to disable SSO enforcement through the API. Attackers can create local password credentials to authenticate directly, bypassing organizational SSO policies and identity-provider-enforced multi-factor authentication.

CWE	CWE-285
Vendor	n8n
Product	n8n
Published	Jun 30, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N

Attack Vector

Network

Attack Complexity

High

Privileges Required

Low

User Interaction

None

Scope

Changed

Confidentiality

None

Integrity

High

Availability

None

Affected Versions

n8n / n8n

0 < 2.8.0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

github.com: https://github.com/n8n-io/n8n/security/advisories/GHSA-vjf3-2gpj-233v vulncheck.com: https://www.vulncheck.com/advisories/n8n-sso-enforcement-bypass-via-api

Credits

🔍 stanislavfortaisle