CVE-2026-56358
MEDIUM
NVD
CVSS Score
5.4
Severity
MEDIUM
Published
Jun 24, 2026
Vendor
unknown
Description
n8n before 1.123.25 (1.x) and before 2.11.2 (2.x), with the fix also included in 2.12.0, contains a stored cross-site scripting vulnerability in the Form Trigger node's CSS sanitization that allows authenticated users to inject malicious scripts. Attackers with workflow creation permissions can inject XSS payloads that execute persistently for all form visitors, enabling form hijacking and phishing attacks.