What is GHSA-2434-3x6q-8r99?

GHSA-2434-3x6q-8r99 is a security advisory published by GitHub Security Advisories with Medium severity. n8n: External Secrets Accessible via Workflow Expressions Outside Credentials

Which CVE IDs does GHSA-2434-3x6q-8r99 cover?

GHSA-2434-3x6q-8r99 covers the following CVE IDs: CVE-2026-59254. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

Which products are affected by GHSA-2434-3x6q-8r99?

GHSA-2434-3x6q-8r99 affects 2 products, including: npm/n8n:\u003e= 2.28.0, \u003c 2.28.1; npm/n8n:\u003c 2.27.4.

GHSA-2434-3x6q-8r99Medium

n8n: External Secrets Accessible via Workflow Expressions Outside Credentials

Vendor

GitHub Security Advisories

Published

July 22, 2026

Last Modified

July 22, 2026

🔗 CVE IDs covered (1)

CVE-2026-59254 →

📋 Description

Impact

External secrets were incorrectly resolved in workflow node expressions, where they are not intended to be available. An authenticated user with project editor access could read the plaintext value of external secrets by referencing them in a node expression, without needing explicit secrets access permissions.

This issue only affects instances with the external secrets feature configured.

Patches

The issue has been fixed in n8n versions 2.27.4 and 2.28.1. Users should upgrade to one of these versions or later to remediate the vulnerability.

Workarounds

If upgrading is not immediately possible, administrators should consider the following temporary mitigations:

Restrict project membership to fully trusted users only.
Avoid granting editor access to projects on instances where external secrets are configured.

These workarounds do not fully remediate the risk and should only be used as short-term mitigation measures.

🎯 Affected products2

npm/n8n:>= 2.28.0, < 2.28.1
npm/n8n:< 2.27.4