CVE-2026-56359 — n8n - Cross-Site Scripting in Credential Management OAuth2 Authorization URL
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 crede…
Published: 2026-07-08 · CVSS: 4.8 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7