VULNERABILITY INTELLIGENCE

CVE-2026-77083

CVSS score5.9 MEDIUM
EPSS probability0.37%
CISA KEVNot currently listed
Published2026-08-20
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:H/I:L/A:N

Description

n8n is a workflow automation platform. In versions prior to 1.123.69, 2.33.4, and 2.34.1, the JavaScript Code node's VM sandbox did not freeze the sandbox's Function.prototype, allowing an authenticated user with the ability to create and execute workflows to pollute it from within a Code node execution and recover a reference to the host's globalThis, resulting in a sandbox escape. The full exploit chain additionally depends on specific modules being available as allowlisted imports in the deployment's configuration. The issue is fixed in versions 1.123.69, 2.33.4, and 2.34.1.

Weakness classification

  • disclosure@vulncheck.com: CWE-1321

Primary references