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Advisories

n8n before 1.123.83, 2.41.4, and 2.42.1 Stored XSS via Binary-Data File Preview

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Severity
high
Date
Affecting

  • n8n >= 0, < 1.123.83

  • n8n >= 2.0.0, < 2.41.4

  • n8n >= 2.42.0, < 2.42.1

CWE
  • CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
CVSS
7.2
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Credit
AdamKorcz
Description
n8n before 1.123.83, 2.41.4, and 2.42.1 contains a stored cross-site scripting vulnerability in the file-preview modal, which re-publishes binary data as an unsandboxed same-origin blob URL. A member who uploads a crafted item can run script in the n8n origin of whoever previews it, typically the owner, and act with their session.

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