n8n contains a sanitizer bypass vulnerability in the legacy expression evaluator's computed-member handler. An authenticated user with workflow create or modify permissions can craft a malicious expression to bypass the sanitizer and achieve host-level code execution as the n8n process. The legacy expression engine is the default in affected versions. Fixed in n8n 1.123.64, 2.29.8, and 2.30.1.
References
| Link | Resource |
|---|---|
| https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g | Mitigation Vendor Advisory |
| https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution | Third Party Advisory |
Configurations
Configuration 1 (hide)
|
History
27 Jul 2026, 19:11
| Type | Values Removed | Values Added |
|---|---|---|
| References | () https://github.com/n8n-io/n8n/security/advisories/GHSA-pm35-fqvh-cq5g - Mitigation, Vendor Advisory | |
| References | () https://www.vulncheck.com/advisories/n8n-before-sanitizer-bypass-remote-code-execution - Third Party Advisory | |
| First Time |
N8n
N8n n8n |
|
| CVSS |
v2 : v3 : |
v2 : unknown
v3 : 8.8 |
| CPE | cpe:2.3:a:n8n:n8n:*:*:*:*:enterprise:node.js:*:* cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:enterprise:node.js:*:* cpe:2.3:a:n8n:n8n:*:*:*:*:community:node.js:*:* cpe:2.3:a:n8n:n8n:2.30.0:*:*:*:community:node.js:*:* |
22 Jul 2026, 12:18
| Type | Values Removed | Values Added |
|---|---|---|
| New CVE |
Information
Published : 2026-07-22 12:18
Updated : 2026-07-27 19:11
NVD link : CVE-2026-65591
Mitre link : CVE-2026-65591
CVE.ORG link : CVE-2026-65591
JSON object : View
Products Affected
n8n
- n8n
CWE
CWE-917
Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')