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Advisories

n8n - Stored Cross-Site Scripting in Form Trigger Node

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severity
medium
date
Affecting

  • n8n >= 0, < 1.123.25

  • n8n >= 2.0.0-rc.0, < 2.11.2

  • n8n >= 0, < 2.11.2

  • n8n >= 0, < 1.123.25

CWE
  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS
5.1
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
Credit
tr4ce-ju
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.

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