CVE-2026-72769
n8n before 1.123.67 Prototype Pollution via VM Expression Engine
CVSS Score
0.0
EPSS Score
0.0%
EPSS Percentile
0th
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.
| CWE | CWE-1321 |
| Vendor | n8n-io |
| Product | n8n |
| Published | Aug 11, 2026 |
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Affected Versions
n8n-io / n8n
0 < 1.123.67
n8n-io / n8n
0 < 2.32.1
n8n-io / n8n
0 < 2.31.5