CVE-2026-86085: n8n Cross-Tenant Project-Member PII Disclosure Vulnerability
Summary
CVE-2026-86085: Impact The endpoints /rest/roles/:slug/assignments and /rest/roles/:slug/assignments/:projectId/members checked only that the caller could manage the role type, not that they could see the project named in the request. Affects n8n across 2 version ranges.
< 2.37.7
>= 2.38.0, < 2.38.2
Fixed in 2.37.7 or 2.38.2, depending on the release line you run. 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, integrating APIs, and managing data across different platforms. However, n8n has a vulnerability that affects its role assignment endpoints, potentially exposing sensitive user information.
Vulnerability Detail
The vulnerability arises from inadequate access control checks on the role assignment endpoints '/rest/roles/:slug/assignments' and '/rest/roles/:slug/assignments/:projectId/members'. These endpoints only verify if the caller has permission to manage the role type, without confirming if they have visibility over the specified project. As a result, a user with role-management permissions can access any project and retrieve its members' names and email addresses, leading to potential privacy breaches.
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 versions below are the minimum fixed release for this vulnerability.
If you can't move to the latest
The minimum fixed version depends on the release line you run.
-
< 2.37.72.37.7npm install n8n@2.37.7 -
>= 2.38.0, < 2.38.22.38.2npm install n8n@2.38.2
Tip — Not sure which release line you're on? Vulert can find the fix for the version you are using. Scan free →
Workaround
If immediate upgrading is not feasible, consider the following temporary mitigations: 1. Restrict access to the n8n instance to fully trusted users only. 2. Audit and revoke any custom global roles that carry the 'role:manageProject' scope, limiting that scope to fully trusted users only.
Conclusion
In summary, CVE-2026-86085 is a significant vulnerability in n8n that can lead to unauthorized access to sensitive user information. Users are strongly encouraged to upgrade to the latest versions to mitigate this risk. Temporary workarounds can be implemented while planning for an upgrade.
See every vulnerability recorded for n8n →
FAQ
CVE-2026-86085 is a vulnerability in n8n that allows unauthorized access to project member information due to insufficient access control checks.
You can use Vulert's playground at Vulert Scanner to check if your application is affected by this vulnerability without needing to sign up.
The vulnerability can lead to unauthorized disclosure of personally identifiable information (PII) of project members, including names and email addresses.
The CVSS score of this vulnerability is 5.1, indicating a moderate severity level.
If you cannot upgrade right away, restrict access to trusted users and audit roles that have project management permissions as a temporary measure.
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