Description
n8n's JavaScript task runner shared a single module cache across all users' Code-node executions. In affected versions (before 1.123.67, 2.31.5, and 2.32.1), a user able to run a Code node could poison a cached module and thereby alter other users' Code-node executions on the same runner, affecting their confidentiality, integrity, or availability. This is a cross-user isolation break within a single n8n instance and does not constitute a sandbox escape or remote code execution. Only multi-user instances running the JS task runner with built-in or external modules enabled are affected.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| n8n-io | n8n | < 1.123.67, 2.32.0 – < 2.32.1, 2.0.0-rc.0 – < 2.31.5 | 1.123.67 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | n8n | < 1.123.67 | 1.123.67 | GHSA-9cmh-xcqm-5hqr |
| npm | n8n | >= 2.32.0, < 2.32.1 | 2.32.1 | GHSA-9cmh-xcqm-5hqr |
| npm | n8n | >= 2.0.0-rc.0, < 2.31.5 | 2.31.5 | GHSA-9cmh-xcqm-5hqr |
Advisories 1
- WID-SEC-2026-2489 n8n: Mehrere Schwachstellen BSI CERT-Bund (WID) · Aug 11, 2026
References
- GitHub Security Advisory (GHSA-9cmh-xcqm-5hqr) vendor-advisory
- VulnCheck Advisory: n8n before 1.123.67 Module Cache Poisoning via Code Node third-party-advisory