CVE-2026-65591: n8n

High severity, CVSS 8.8. EPSS: 0.7% chance of exploitation in the next 30 days.

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.

Affected products

• n8n n8n: before 1.123.64 (fixed in 1.123.64); from 2.0.0, before 2.29.8 (fixed in 2.29.8); version 2.30.0 only

Published 2026-07-22. Last modified 2026-07-27.