Credential Exfiltration Vulnerability in n8n: Bypass of Allowed HTTP Request Domains
Summary
GHSA-3875-8gcx-7v46: n8n: Credential exfiltration via Allowed HTTP Request Domains Bypass. Affects n8n versions < 2.20.0. Fixed in 2.20.0. How to fix ↓
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Background
n8n is an open-source workflow automation tool that allows users to connect various applications and services to automate tasks. It provides a user-friendly interface for creating workflows and supports a wide range of integrations. However, n8n has a vulnerability that allows authenticated users to bypass restrictions on HTTP request domains, potentially leading to credential exfiltration.
Vulnerability Detail
The vulnerability exists in the POST /rest/dynamic-node-parameters/options endpoint, which permits any authenticated user to make HTTP requests that include sensitive credentials. This bypasses the intended restrictions on which hosts can be contacted using those credentials. The risk is significant as it can lead to unauthorized access to sensitive information, affecting the confidentiality of user data.
How To Fix
Latest published version: 2.44.6 as of 22 Oct 2026
npm install n8n@2.44.6Upgrading to it may include breaking changes; the version below is the minimum fixed release for this vulnerability.
If you need the minimum change
2.20.0
This is the first release that contains the fix.
npm install n8n@2.20.0Tip — Not sure which version your app runs? Vulert can match this fix to it. Scan free →
Workaround
If upgrading is not immediately feasible, consider the following temporary mitigations: 1. Restrict access to n8n to fully trusted users only. 2. Limit credential sharing to users who genuinely require access to those credentials. These measures should only be used as short-term solutions.
Conclusion
The credential exfiltration vulnerability in n8n poses a significant risk to users by allowing unauthorized access to sensitive information. It is crucial to upgrade to the patched version 2.20.0 or implement temporary workarounds to mitigate the risk. Continuous monitoring with tools like Vulert can help maintain security.
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FAQ
The vulnerability allows authenticated users to bypass restrictions on HTTP request domains, potentially leading to credential exfiltration.
The CVSS score of this vulnerability is 9.1, indicating a high level of severity.
Implement temporary workarounds such as restricting access to trusted users and limiting credential sharing.
Detailed information can be found in the official advisory on GitHub or by using Vulert to monitor your application.
Vulert monitors and alerts in real-time for open-source vulnerabilities using just the package-lock.json file, allowing you to check if your application is affected.
References
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