CVE-2026-56359
MEDIUM
NVD
CVSS Score
5.4
Severity
MEDIUM
Published
Jul 08, 2026
Vendor
unknown
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.