Mitigation Strategies

The primary mitigation is to upgrade n8n to version 2.24.0 or later, where this vulnerability is fixed.

As temporary mitigations before upgrading, you can:

• Restrict workflow editing permissions to trusted users only.
• Disable the Microsoft SQL node by setting the NODES_EXCLUDE environment variable to exclude it.

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Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

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Executive Summary

CVE-2026-54312 is a prototype pollution vulnerability in the Microsoft SQL node of n8n, an open-source workflow automation platform.

Before version 2.24.0, an authenticated user who has permission to create or modify workflows could exploit this vulnerability by supplying a crafted value to the table parameter.

This crafted input causes global prototype pollution, which means the Object.prototype is polluted process-wide for the lifetime of the n8n server process.

As a result, this leads to application-wide validation failures and makes the entire n8n instance completely non-functional until the server is restarted.

The vulnerability is fixed in n8n version 2.24.0.

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Impact Analysis

This vulnerability can cause the entire n8n instance to become non-functional due to global prototype pollution.

Specifically, the pollution causes widespread validation failures across the application, disrupting normal operations.

Since the issue persists for the lifetime of the server process, the only way to restore functionality is to restart the n8n server.

An attacker only needs authenticated access with permissions to create or modify workflows, which may be a low privilege level in some environments.

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Detection Guidance

This vulnerability manifests as application-wide validation failures and causes the n8n instance to become completely non-functional until the server process is restarted.

Detection involves monitoring for unexpected validation errors or service disruptions in the n8n workflow automation platform, especially if the Microsoft SQL node is in use.

Since the vulnerability requires an authenticated user with workflow creation or modification permissions to supply a crafted value to the table parameter, reviewing workflow creation/modification logs for suspicious or unexpected table parameter values can help detect exploitation attempts.

No specific commands are provided in the available resources for direct detection.

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