CVE-2026-56354: medium-severity vulnerability in n8n
n8n - Cross-Site Scripting and Open Redirect in Form Node
Published · Updated
E-mail alert when it lands in KEV, gets a public PoC or its score goes up.
13Vexday Risk Score
No sign of exploitation. No public exploitation artifact known so far.
ssvc Trackcvss 5.1epss 0.2%
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.
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
Affected products
n8n · n8nRelated CVEs — n8n
In the same product, most dangerous first.
CVE-2026-59257MEDIUMn8n - SQL Injection in MySQL v1 executeQuery Operation via Expression InterpolationEPSS 0.6%CVE-2025-71380HIGHn8n - Arbitrary Command Execution via Execute Command NodeEPSS 0.6%CVE-2026-56348MEDIUMn8n - Credential Exfiltration via Allowed HTTP Request Domains Bypass in Dynamic Node Parameters EndpointEPSS 0.5%CVE-2026-56349MEDIUMn8n - Guardrail Node Bypass via Crafted InputEPSS 0.5%CVE-2026-59259MEDIUMn8n - Permission Bypass via Expression Parser Mismatch in External SecretsEPSS 0.4%CVE-2026-58661MEDIUMn8n - Disk Space Exhaustion via Data-Table File Upload EndpointEPSS 0.4%