Auth bypass in N8n
CVE-2026-56350
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 6.3 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:N/I:H/A:N.
EPSS exploit prediction
EPSS: 0.004 (29.3th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 29th percentile — 29.3% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.004 · change: 0.000
Affected products
- N8n — versions 0, 2.8.0
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-vjf3-2gpj-233v (vendor-advisory, Mitigation, Vendor Advisory)
- www.vulncheck.com/advisories/n8n-sso-enforcement-bypass-via-api (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-56350?
- CVE-2026-56350 is a medium-severity vulnerability in N8n, classified under Improper Authorization. CVSS score: 6.3/10. Published 2026-06-30.
- How severe is CVE-2026-56350?
- Medium severity. CVSS v3 base score is 6.3 out of 10.