CVE-2026-65591
High
Description
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.
SeverityHigh
CVSS8.8
Exploit probability—
Product
N8n
PublishedJul 22, 2026
First seenJul 22, 2026
Weakness typeCWE-917Expression language injection
How to fix
Update
- n8n n8n1.123.64, 2.29.8 or later
- n8n1.123.64, 2.30.1, 2.29.8 or later
Vendor advisories
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| n8n n8n | v < 1.123.64, 2.0.0 ≤ v < 2.29.8, 2.30.0 | 1.123.64, 2.29.8 |
| n8nnpm | v < 1.123.64, 2.30.0 ≤ v < 2.30.1, 2.0.0-rc.0 ≤ v < 2.29.8 | 1.123.64, 2.30.1, 2.29.8 |
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