high8.1
CVE-2026-72769
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine.
Impact
n8n before 1.123.67, 2.31.5, and 2.32.1 contains a prototype pollution vulnerability in the VM expression engine. An authenticated user able to create or edit a workflow expression can abuse the engine's array-element access to obtain a reference to a host built-in and pollute its prototype in the main n8n process (a sandbox escape), leading to a denial of service. Both self-hosted and cloud instances running the VM expression engine are affected.
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| N8n | N8n | before 1.123.67 from 2.0.0 before 2.31.5 Version 2.32.0 |