MEDIUM 6.1 NVD
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. An authenticated user able to create or edit a
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.
References
- https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vh
- https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engi
This medium severity vulnerability with a CVSS score of 6.1 was published on 2026-08-11 via NVD.
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