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Advisories

n8n before 1.123.69 Expression Injection via Resource Locator

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severity
high
date
Affecting

  • n8n >= 0, < 1.123.69

  • n8n >= 0, < 2.34.1

  • n8n >= 0, < 2.33.4

CWE
  • CWE-94 Improper Control of Generation of Code ('Code Injection')
CVSS
8.4
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:H/VA:N/SC:L/SI:L/SA:N
Credit
Masofgon
Description
n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contain an expression injection vulnerability in resource-locator field link preview rendering. The editor spliced the field's stored value directly into the node type's URL template without checking for expression syntax. An authenticated member can store a malicious value so that when another user opens the affected node in the editor, the injected expression is evaluated as JavaScript in the victim's authenticated session (cross-user script execution).

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