n8n before versions 1.123.61, 2.27.4, and 2.28.1 contains a permission bypass vulnerability in external secrets handling caused by a mismatch between the static validation check and the runtime expression engine. An authenticated user with credential create or update permissions but without the externalSecret:list scope can embed external secret references into credentials in forms the static validation does not detect; these references resolve at workflow execution time, exposing secret values the user is not authorized to access. This issue only affects instances where an external secrets provider is configured and Advanced Permissions are in use.
References
| Link | Resource |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories/GHSA-jp7m-xcgx-57qm | Vendor Advisory |
| https://www.vulncheck.com/advisories/n8n-permission-bypass-via-expression-parser-mismatch-in-external-secrets | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
16 Jul 2026, 20:08
| Type | Values Removed | Values Added |
|---|---|---|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 6.5 |
| References | () https://github.com/n8n-io/n8n/security/advisories/GHSA-jp7m-xcgx-57qm - Vendor Advisory | |
| References | () https://www.vulncheck.com/advisories/n8n-permission-bypass-via-expression-parser-mismatch-in-external-secrets - Third Party Advisory | |
| CPE | cpe:2.3:a:n8n:n8n:2.28.0:*:*:*:community:node.js:*:* cpe:2.3:a:n8n:n8n:2.28.0:*:*:*:enterprise:node.js:*:* cpe:2.3:a:n8n:n8n:*:*:*:*:*:node.js:*:* |
|
| First Time |
N8n
N8n n8n |
15 Jul 2026, 12:18
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-15 12:18
Updated : 2026-07-16 20:08
NVD link : CVE-2026-59259
Mitre link : CVE-2026-59259
CVE.ORG link : CVE-2026-59259
JSON object : View
Products Affected
n8n
- n8n
CWE
CWE-639
Authorization Bypass Through User-Controlled Key