VULNERABILITY INTELLIGENCE

CVE-2026-77068

CVSS score8.8 HIGH
EPSS probability0.93%
CISA KEVNot currently listed
Published2026-08-20
Last modified2026-09-01
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Description

n8n before 2.33.4 and 2.34.x before 2.34.1 contain a remote code execution vulnerability in the @n8n/workflow-sdk node-schema loader used for MCP node-schema loading. The loader derives a node's schema module path directly from the attacker-supplied node type string without validating path-traversal sequences. An authenticated user with global:member privileges can reference malicious files via path traversal, causing code execution in the n8n main process.

Weakness classification

  • disclosure@vulncheck.com: CWE-22

Primary references