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 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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vh
https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engine

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-11 13:19

Updated : 2026-09-09 20:24

NVD link : CVE-2026-72769

Mitre link : CVE-2026-72769

CVE.ORG link : CVE-2026-72769

JSON object : View

Products Affected

No product.

CWE

CWE-1321

Improperly Controlled Modification of Object Prototype Attributes ('Prototype Pollution')

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