CVE-2026-77068

EUVD-2026-63257

20.08.2026, 12:16

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.

Path Traversal

Provider	Type	Base Score	Atk. Vector	Atk. Complexity	Priv. Required	Vector
NIST	Primary	8.8 HIGH	NETWORK	LOW	LOW	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Base Score

CVSS 3.x

EPSS Score

Percentile: 59.24%

Affected Products (NVD)

Vendor	Product	Version
n8n	n8n	2.33.0 ≤ 𝑥 < 2.33.4
n8n	n8n	2.34.0

𝑥

= Vulnerable software versions

Common Weakness Enumeration

CWE-22 - Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
The software 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 software 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.

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-6h4x-896x-fw5m

https://www.vulncheck.com/advisories/n8n-before-remote-code-execution-via-path-traversal