What is GHSA-hf5p-745p-2j3h?

GHSA-hf5p-745p-2j3h is a security advisory published by GitHub Security Advisories with Medium severity. n8n versions before 2.34.1 contain a credential validation bypass in the MCP...

Which CVE IDs does GHSA-hf5p-745p-2j3h cover?

GHSA-hf5p-745p-2j3h covers the following CVE IDs: CVE-2026-77073. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

GHSA-hf5p-745p-2j3hMedium

n8n versions before 2.34.1 contain a credential validation bypass in the MCP...

Vendor

GitHub Security Advisories

Published

August 20, 2026

Last Modified

August 20, 2026

🔗 CVE IDs covered (1)

CVE-2026-77073 →

📋 Description

n8n versions before 2.34.1 contain a credential validation bypass in the MCP create_workflow_from_code tool when authentication type is set to an expression. Attackers with a valid MCP Bearer API key and knowledge of a target credential ID can persist unauthorized cross-project credential references on workflows in different projects.

🔗 References (4)

https://github.com/n8n-io/n8n/security/advisories/GHSA-vfrj-582q-mvcp
https://nvd.nist.gov/vuln/detail/CVE-2026-77073
https://www.vulncheck.com/advisories/n8n-before-cross-project-credential-access-via-mcp
https://github.com/advisories/GHSA-hf5p-745p-2j3h