n8n is an open source workflow automation platform. Prior to 1.123.76, 2.37.7, and 2.38.2, the expression compiler sanitizer resolved through dynamically scoped this and did not reject reserved class member names. A class field named __sanitize could rebind the sanitizer and reach the Function constructor, enabling backend code execution and editor-preview JavaScript execution. The affected AST hook is PrototypeSanitizer in packages/workflow/src/expression-sandboxing.ts. This issue is fixed in versions 1.123.76, 2.37.7 and 2.38.2.
CVSS v3.1 Score
8.8
/ 10.0
HIGH
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Information
- Published
- 8 sept. 2026
- Updated
- 11 sept. 2026
- Status
- Analyzed
- Source
- security-advisories@github.com
Affected products
n8n n8n
Versions : 1.123.76, 2.37.7, 2.38.2
Weaknesses (CWE)
CWE-94
References (4)
- https://github.com/n8n-io/n8n/security/advisories/GHSA-hw8v-xxg5-vvvxMitigationVendor Advisory
Similar CVEs
Other vulnerabilities of type CWE-94
Loading…
Monitor your products
Get automatic alerts for every new CVE affecting your equipment.