PT-2026-54040

CVE-2026-56356

Published

2026-03-27

Updated

2026-07-01

Description by

CVSS 3.1

5.4

Medium

MetricsAV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Name of the Vulnerable Software and Affected Versions n8n versions prior to 1.123.27 n8n versions 2.0.0 through 2.13.2 n8n version 2.14.0

Description A stored cross-site scripting issue exists in the Chat Trigger node's Custom CSS field caused by a misconfiguration of the sanitize-html library. An authenticated user with permissions to create or modify workflows can inject JavaScript that bypasses sanitization. This allows the execution of malicious scripts against any user who visits the public chat page.

Recommendations Update to version 1.123.27 or later. Update to version 2.13.3 or later. Update to version 2.14.1 or later.

Exploitability

Exploit

Fix

Impacts

Researchers

Jorianwoltjer

Vendors

Affected products

Weakness enumeration

CWE-79: Improper Neutralization of Input During Web Page Generation (\'Cross-site Scripting\')

Related identifiers