| Component | n8n |
| Severity | critical (CVSS 9.9) |
| CVSS vector | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| Published (NVD) | 2026-08-11 |
| Last modified | 2026-09-01 |
| Affected versions | n8n >= 2.31.0, < 2.31.5 n8n = 2.32.0 |
| Fixed in | 2.31.5 |
| Weakness | CWE-94 |
| CISA KEV | not listed |
NVD 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.
What to do
- Upgrade n8n to
2.31.5or later. - Do not expose the component's API or UI to the internet without authentication in front of it.
Sources
- NVD: CVE-2026-72765
- https://github.com/n8n-io/n8n/security/advisories/GHSA-gv7g-jm28-cr3m
- https://www.vulncheck.com/advisories/n8n-before-remote-code-execution-via-expression-sandbox-escape
Read more
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