n8n: Cross-Tenant Project-Member PII Disclosure via Missing Per-Project Scope Check on Role Assignment Endpoints
- Product
- n8n
- CVE
- CVE-2026-86085
- Affected
- n8n >= 2.38.0, < 2.38.2 and n8n < 2.37.7
- Fixed in
- 2.38.2 and 2.37.7
Last verified against sources: October 26, 2026
Am I affected?
n8n: affected n8n >= 2.38.0, < 2.38.2 and n8n < 2.37.7. Fixed in 2.38.2 and 2.37.7.
- Check your version: run
npm ls n8n. Versions >= 2.38.0, < 2.38.2 of n8n are affected. [1]
What to do now
- Upgrade to the fixed version: run
npm install n8n@2.38.2(first patched version 2.38.2). [1] - Upgrade to n8n 2.38.2 or 2.37.7 or later. [1]
- Restrict n8n instance access to fully trusted users only. [1]
- Audit and revoke any custom global roles that carry the
role:manageProjectscope, limiting that scope to fully trusted users only. [1]
General practice, not from the source: if the affected software could read tokens or credentials, rotate them after upgrading; pin versions and review changes before updating tools your agents run.
What happened
- The endpoints
/rest/roles/:slug/assignmentsand/rest/roles/:slug/assignments/:projectId/memberschecked only that the caller could manage the role type, not that they could see the project named in the request. [1] - A user holding role-management permission could therefore name any project on the instance and read back its members' names and email addresses. [1]
Impact
- A user holding role-management permission could name any project on the instance and read back its members' names and email addresses. [1]
What was done
- The issue has been fixed in n8n versions 2.38.2 and 2.37.7. [1]
- The patch adds a project-access check to both routes, hiding projects the caller cannot see and returning not-found for a project it cannot list. [1]
- Users should upgrade to one of these versions or later to remediate the vulnerability. [1]
Sources
- GHSA-cqr2-h44g-v75v — GitHub Advisory Database
Every statement above was checked against these sources before publishing. Spotted an error? Tell us and we will correct it with a dated note.
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[CVE-2026-86085] n8n: Cross-Tenant Project-Member PII Disclosure via Missing Per-Project Scope Check on Role Assignment Endpoints
Product: n8n | Affected: n8n >= 2.38.0, < 2.38.2 and n8n < 2.37.7 | Fixed in: 2.38.2 and 2.37.7
Summary: 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.
Source & remediation on AgentArmorHQ: https://agentarmorhq.com/incidents/2026/09/cve-2026-86085-n8nCorrections
Report an error or request a correction. We review requests within 5 business days and add a dated correction note.
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