7.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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CVE-2025-68697

CVE-2025-68697: Self-hosted n8n has Legacy Code node that enables arbitrary file read/write

n8n is an open source workflow automation platform. Prior to version 2.0.0, in self-hosted n8n instances where the Code node runs in legacy (non-task-runner) JavaScript execution mode, authenticated users with workflow editing access can invoke internal helper functions from within the Code node. This allows a workflow editor to perform actions on the n8n host with the same privileges as the n8n process, including: reading files from the host filesystem (subject to any file-access restrictions configured on the instance and OS/container permissions), and writing files to the host filesystem (subject to the same restrictions). This issue has been patched in version 2.0.0. Workarounds for this issue involve limiting file operations by setting N8N_RESTRICT_FILE_ACCESS_TO to a dedicated directory (e.g., ~/.n8n-files) and ensure it contains no sensitive data, keeping N8N_BLOCK_FILE_ACCESS_TO_N8N_FILES=true (default) to block access to .n8n and user-defined config files, and disabling high-risk nodes (including the Code node) using NODES_EXCLUDE if workflow editors are not fully trusted.

(GitHub Advisory)

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CVE-2025-68697

CVE-2025-68697:

7.1

CVSS Score

3.1

-

CVSS Score

Basic Information

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Technical Details

Package Name	Ecosystem	Vulnerable Versions	First Patched Version
n8n	npm	< 2.0.0	2.0.0

Technical Details

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Miggo AI

Root Cause Analysis

The vulnerability exists in the legacy, non-task-runner execution mode of the n8n Code node. When task runners are disabled, the Code node uses a vm2 sandbox to execute user-provided JavaScript code. The vulnerability is introduced because the sandbox is created with a context that includes an object named helpers. This helpers object contains internal n8n functions that can be abused by a malicious user to read and write arbitrary files on the host system, with the same privileges as the n8n process. The execute function in Code.node.ts is the entry point that, when not using a task runner, instantiates the vulnerable JavaScriptSandbox. The runCode, runCodeAllItems, and runCodeEachItem methods within JavaScriptSandbox are the functions that directly execute the user's code within this insecure sandbox. The patch for this vulnerability involves enabling task runners by default, which isolates the code execution in a separate process and removes access to the vulnerable helpers object.

Vulnerable functions

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WAF Protection Rules

WAF Rule

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Reasoning

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