n8n: Expression sandbox escape via arrow-function bodies enabling command execution

緊急 9.9CVE-2026-72765 · GHSA-gv7g-jm28-cr3m · 11/08/2026 公開 · 29/10/2026 更新

要点

CVE-2026-72765 は n8n (n8n), n8n に影響する深刻度「緊急」 (CVSS 9.9) の脆弱性です。
今後30日間に悪用される確率（EPSS）：0.86%（全脆弱性の 58.6% より高い）。
対処：2.31.5, 2.32.1 以降に更新してください。

パッケージ	影響を受けるバージョン	修正済みバージョン
n8n n8n	`= 2.32.0≥ 2.31.0, < 2.31.5`	`2.31.5`
n8n npm	`≥ 2.32.0, < 2.32.1< 2.31.5`	`2.32.12.31.5`

概要

Impact

An authenticated user with permission to create or modify workflows could abuse crafted expressions using arrow functions to bypass the expression sandbox, triggering unintended system command execution on the host running n8n.

Patches

The issue has been fixed in n8n versions 2.31.5 and 2.32.1. Users should upgrade to one of these versions or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

Restrict n8n instance access to fully trusted users only.
Restrict workflow creation and editing permissions to fully trusted users only.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

NVD の説明

n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation. An authenticated user with permission to create or modify workflows can craft expressions using arrow-function bodies to bypass the expression sandbox, triggering system command execution on the host running n8n. The issue is fixed in versions 2.31.5 and 2.32.1.