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VULNERABILITIES

CVE-2026-56359 Details

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.

Metrics

CVSS 3.x Severity and Vector Strings:

CNA: [email protected]CVSS-B:5.4 MEDIUMVector:CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

References to Advisories, Solutions, and Tools

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URLSource(s)Tag(s)
https://github.com/n8n-io/n8n/security/advisories/GHSA-364x-8g5j-x2pr [email protected]MitigationVendor Advisory
https://www.vulncheck.com/advisories/n8n-cross-site-scripting-in-credential-management-oauth2-authorization-url [email protected]Third Party Advisory

Weakness Enumeration

CWE-IDCWE NameSource
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')[email protected]

Affected Products

ProductVersions
n8n n8n
< 2.6.4
>= 2.7.0, < 2.8.0

CPE

  • cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:*

Remediation

  • No remediation found in references.

Change History

3 change records found show changes

QUICK INFO

CVE Dictionary Entry:
CVE-2026-56359
NVD Published Date:
Jul 8, 2026
NVD Last Modified:
Jul 9, 2026
Source:
[email protected]
CVE-2026-56359 Details - Not Deferred