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.

• CWE-1321

• https://github.com/n8n-io/n8n/security/advisories/GHSA-hx4h-vr3m-45vhMitigation, Vendor Advisory
• https://www.vulncheck.com/advisories/n8n-before-prototype-pollution-via-vm-expression-engineThird Party Advisory

Published

Aug 11, 2026

Last Modified

Sep 18, 2026

Status

Analyzed

• How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
• Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
• PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
• AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.

• CVE-2026-72763n8n before 1.123.67, 2.31.5, and 2.32.1 validates credential…6.5
• CVE-2026-72764n8n's JavaScript task runner shared a single module cache ac…8.8
• CVE-2026-72765n8n before 2.31.5 and before 2.32.1 contain a sandbox escape…9.9
• CVE-2026-72766n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.…7.5
• CVE-2026-72767n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.…8.8
• CVE-2026-72768n8n versions before 2.32.1 contain a server-side request for…8.3
• CVE-2026-72770n8n versions before 1.123.67 contain a path traversal vulner…6.5
• CVE-2026-72771n8n versions before 2.32.1 fail to enforce the Allowed HTTP …6.5
• CVE-2026-72772n8n before 2.32.1 (and before 2.31.5) is vulnerable to accou…8.8
• CVE-2026-72773n8n before 2.31.5 and 2.32.x before 2.32.1 contain a path-co…7.7
• CVE-2026-72774n8n before 1.123.67, 2.31.5, and 2.32.1 contains a credentia…6.5
• CVE-2026-72775n8n before 1.123.67, 2.31.5, and 2.32.1 contains a SQL injec…8.8