VULNERABILITY INTELLIGENCE

CVE-2026-56358

CVSS score5.4 MEDIUM
EPSS probability0.24%
CISA KEVNot currently listed
Published2026-06-24
Last modified2026-10-29
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

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.

Weakness classification

  • disclosure@vulncheck.com: CWE-79

Primary references