Vulnerability Description
n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL fields. Attackers can craft malicious credentials and trick victims into clicking the OAuth authorization button, executing arbitrary scripts in their browser session with the victim's privileges.
CVSS Score
MEDIUM
Affected Products
| Vendor | Product | Versions |
|---|---|---|
| N8N | N8N | < 2.6.4 |
Related Weaknesses (CWE)
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2prMitigationVendor Advisory
- https://www.vulncheck.com/advisories/n8n-cross-site-scripting-in-credential-manaThird Party Advisory
FAQ
What is CVE-2026-56359?
CVE-2026-56359 is a vulnerability with a CVSS score of 5.4 (MEDIUM). n8n before 2.8.0 contains a cross-site scripting vulnerability in the credential management flow where authenticated users can inject malicious JavaScript URLs into OAuth2 credential Authorization URL...
How severe is CVE-2026-56359?
CVE-2026-56359 has been rated MEDIUM with a CVSS base score of 5.4/10. Review the CVSS metrics above for detailed severity breakdown.
Is there a patch for CVE-2026-56359?
Check the references section above for vendor advisories and patch information. Affected products include: N8N N8N.