CVE-2026-72769
CVE-2026-72769 · n8n before 1.123.67 Prototype Pollution via VM Expression Engine
This page contains facts from public vulnerability sources. Check the original advisory before updating.
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 6.1 · Medium · EPSS 0.5% · Fix available
- Published
- Updated
Stack: node
Affected products and versions
n8n
- Versions
- ≥ 0, < 1.123.67: Affected (semver)
- 1.123.67: Not affected (semver)
Update to 1.123.67
n8n
- Versions
- ≥ 0, < 2.32.1: Affected (semver)
- 2.32.1: Not affected (semver)
Update to 2.32.1
n8n
- Versions
- ≥ 0, < 2.31.5: Affected (semver)
- 2.31.5: Not affected (semver)
Update to 2.31.5
n8n npm
- Affected ranges
- SEMVER: < 1.123.67
Update to 1.123.67
n8n npm
- Affected ranges
- SEMVER: ≥ 2.32.0, < 2.32.1
Update to 2.32.1
n8n npm
- Affected ranges
- SEMVER: ≥ 2.0.0-rc.0, < 2.31.5
Update to 2.31.5