要点
- CVE-2026-33696 は n8n (n8n), n8n に影響する深刻度「高」 (CVSS 8.8) の脆弱性です。
- 今後30日間に悪用される確率（EPSS）：0.80%（全脆弱性の 56.7% より高い）。
- 対処：2.13.3, 1.123.27, 2.14.1 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 | = 2.14.0≥ 2.0.0, < 2.13.3< 1.123.27
| 2.13.31.123.27
|
| n8n npm | ≥ 2.0.0-rc.0, < 2.13.3≥ 2.14.0, < 2.14.1< 1.123.27
| 2.13.32.14.11.123.27
|
概要
Impact
An authenticated user with permission to create or modify workflows could exploit a prototype pollution vulnerability in the GSuiteAdmin node. By supplying a crafted parameter as part of node configuration, an attacker could write attacker-controlled values onto Object.prototype. An attacker could use this prototype pollution to achieve remote code execution on the n8n instance.
Patches
The issue has been fixed in n8n versions 2.14.1, 2.13.3, and 1.123.27. 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:
- Limit workflow creation and editing permissions to fully trusted users only.
- Disable the XML node by adding
n8n-nodes-base.xml to the NODES_EXCLUDE environment variable.
These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
NVD の説明
n8n is an open source workflow automation platform. Prior to versions 2.14.1, 2.13.3, and 1.123.27, an authenticated user with permission to create or modify workflows could exploit a prototype pollution vulnerability in the XML and the GSuiteAdmin nodes. By supplying a crafted parameters as part of node configuration, an attacker could write attacker-controlled values onto `Object.prototype`. An attacker could use this prototype pollution to achieve remote code execution on the n8n instance. The issue has been fixed in n8n versions 2.14.1, 2.13.3, and 1.123.27. Users should upgrade to one of these versions or later to remediate the vulnerability. If upgrading is not immediately possible, administrators should consider the following temporary mitigations: Limit workflow creation and editing permissions to fully trusted users only, and/or disable the XML node by adding `n8n-nodes-base.xml` to the `NODES_EXCLUDE` environment variable. These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.
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