| Component | n8n |
| Severity | medium (CVSS 5.4) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N |
| Published (NVD) | 2026-07-08 |
| Last modified | 2026-07-09 |
| Affected versions | n8n < 2.6.4 n8n >= 2.7.0, < 2.8.0 |
| Fixed in | 2.6.4, 2.8.0 |
| Weakness | CWE-79 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade n8n to
2.6.4or later (or the patched release of your branch: 2.8.0). - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-56359
- https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2pr
- https://www.vulncheck.com/advisories/n8n-cross-site-scripting-in-credential-management-oauth2-authorization-url
Read more
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