CVE-2026-77068
Received Received - Intake

Remote Code Execution in n8n Workflow SDK

Publication date: 2026-08-20

Last updated on: 2026-08-20

Assigner: VulnCheck

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.

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Meta Information

Published
2026-08-20
Last Modified
2026-08-20
Generated
2026-08-20
AI Q&A
2026-08-20
EPSS Evaluated
N/A
NVD
CVE-2026-77068
EUVD
EUVD-2026-63257

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
n8n n8n to 2.34.1 (exc)

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-22 The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.

Attack-Flow Graph

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Executive Summary

CVE-2026-77068 is a remote code execution vulnerability in n8n versions before 2.33.4 and 2.34.1. It occurs in the @n8n/workflow-sdk node-schema loader due to improper path validation. Authenticated users with global:member privileges can exploit path traversal sequences in node type strings to reference malicious files, leading to code execution in the n8n main process.

Detection Guidance

To detect this vulnerability, check the version of n8n installed on your system. Run commands like 'n8n --version' or check the package.json file in your n8n installation directory. If the version is below 2.33.4 or 2.34.1, the system is vulnerable.

Impact Analysis

An attacker with global:member privileges could execute arbitrary code on the system running n8n. This may lead to unauthorized data access, system compromise, or disruption of services. The high CVSS score of 8.7 indicates significant potential impact on confidentiality, integrity, and availability.

Compliance Impact

This vulnerability could lead to unauthorized data access or modification, violating GDPR's data protection requirements and HIPAA's safeguards for protected health information. Organizations may face compliance violations, legal penalties, and reputational damage if exploited.

Mitigation Strategies

Immediately upgrade n8n to version 2.33.4 or 2.34.1 or later. Restrict access to trusted users only and disable instance-level MCP if not required. Run the n8n process under a low-privilege OS account to limit potential damage.

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