CVE-2026-72769 — n8n before 1.123.67 Prototype Pollution via VM Expression Engine
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 express…
Published: 2026-08-11 · CVSS: 6.1 · CVSS 4.0
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.
Source: CVE Program · Revision 8b16575c39f1e1810c5e863010da073d2d3285e7