CVE-2026-56354

Medium

Description

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.

SeverityMedium

CVSS4.1

Exploit probability—

Product

N8n

PublishedJul 10, 2026

First seenJul 10, 2026

Weakness typeCWE-79Cross-site scripting (XSS)

How to fix

Update

n8n n8n1.123.24, 2.10.4, 2.12.0 or later
n8n2.12.0, 2.10.4, 1.123.24 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-w673-8fjw-457c

Affected products

Product	Affected versions	Fixed in
n8n n8n	v < 1.123.24, 2.0.0 ≤ v < 2.10.4, 2.10.0 ≤ v < 2.10.4, 2.11.0 ≤ v < 2.12.0	1.123.24, 2.10.4, 2.12.0
n8nnpm	2.11.0 ≤ v < 2.12.0, 2.0.0-rc.0 ≤ v < 2.10.4, v < 1.123.24	2.12.0, 2.10.4, 1.123.24

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