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Advisories

n8n before 1.123.64 Sanitizer Bypass Remote Code Execution

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severity
high
date
Affecting

  • n8n >= 0, < 1.123.64

  • n8n >= 0, < 2.30.1

  • n8n >= 0, < 2.29.8

CWE
  • CWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')
CVSS
8.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:L
Credit
Dremig
Description
n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.

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