Improper access control in n8n - #VU146800
Published: September 2, 2026
Vulnerability identifier: #VU146800
CSH Severity: Low
CVSS v4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-284
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote user to disclose sensitive information.
The vulnerability exists due to improper access control in the role assignment endpoints `/rest/roles/:slug/assignments` and `/rest/roles/:slug/assignments/:projectId/members` when handling requests for project role assignments. A remote privileged user can specify an arbitrary project on the instance and read back its members\' names and email addresses to disclose sensitive information.
The issue enables cross-tenant disclosure of project-member personally identifiable information.
Affected software
n8n
Remediation
Install security update from vendor's website.
n8n - addressed in versions 2.37.7, 2.38.2