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Advisories

n8n before 1.123.64 Remote Code Execution via Git Clone

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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-367 Time-of-check Time-of-use (TOCTOU) Race Condition
CVSS
8.9
CVSS V4 Vector
CVSS:4.0/AV:N/AC:H/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:L/SA:L
Description
n8n before 1.123.64, 2.29.8, and 2.30.1 contains a TOCTOU race condition in the Git node's clone operation that allows authenticated users to bypass path restrictions by swapping a directory for a symlink after the path is validated but before the clone runs. This lets an attacker plant a crafted repository in the community node directory, which n8n loads as a custom node on the next restart, executing arbitrary JavaScript on the server. Both self-hosted and cloud instances are affected.

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