Improper access control in n8n - #VU146792
Published: September 2, 2026
Vulnerability identifier: #VU146792
CSH Severity: Low
CVSS v4: 7.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/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 model-search endpoint of the OpenAI Chat Model node when processing requests with a user-supplied options.baseURL. A remote user can send a specially crafted request to disclose sensitive information.
The issue affects the model-search dropdown path, which could reach an arbitrary host with the credential attached despite an administrator-configured allowed-domains restriction.
Affected software
n8n
Remediation
Install security update from vendor's website.
n8n - addressed in versions 1.123.76, 2.37.7, 2.38.2