CVE-2026-72765: n8n before 2.32.1 Remote Code Execution via Expression Sandbox Escape

Severity: critical (CVSS 9.9 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.9% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-08-11 · updated 2026-10-29
Weakness: CWE-94

Description

n8n before 2.31.5 and before 2.32.1 contain a sandbox escape vulnerability in expression evaluation. An authenticated user with permission to create or modify workflows can craft expressions using arrow-function bodies to bypass the expression sandbox, triggering system command execution on the host running n8n. The issue is fixed in versions 2.31.5 and 2.32.1.

Affected products

n8n-io n8n: from 2.31.0 before 2.31.5; 2.32.0 (and their updates) — fixed in 2.31.5
n8n-io n8n: from 2.32.0 before 2.32.1 — fixed in 2.32.1

How to fix

Upgrade to a fixed version: n8n-io n8n 2.31.5; n8n-io n8n 2.32.1. Check the vendor advisory for mitigations.

References

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