CVE-2026-56359: n8n

Medium severity, CVSS 5.4. EPSS: 0.2% chance of exploitation in the next 30 days.

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.

Affected products

• n8n n8n: before 2.6.4 (fixed in 2.6.4); from 2.7.0, before 2.8.0 (fixed in 2.8.0)

Published 2026-07-08. Last modified 2026-07-09.