CVE-2026-56354: n8n

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

n8n before 1.123.24, 2.10.4, and 2.12.0 (across its 1.x and 2.x branches) contains cross-site scripting and open redirect vulnerabilities in the Form Node due to unsanitized HTML description fields and overly permissive iframe sandbox policies. Authenticated users with workflow creation permissions can inject malicious scripts or redirect parameters to perform stored XSS attacks or phishing redirects against end users.

Affected products

• n8n n8n: before 1.123.24 (fixed in 1.123.24); from 2.0.0, before 2.10.4 (fixed in 2.10.4); from 2.10.0, before 2.10.4 (fixed in 2.10.4); from 2.11.0, before 2.12.0 (fixed in 2.12.0)

Published 2026-07-10. Last modified 2026-07-13.