GHSA-2434-3x6q-8r99

Suggest an improvement
Source
https://github.com/advisories/GHSA-2434-3x6q-8r99
Import Source
https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-2434-3x6q-8r99/GHSA-2434-3x6q-8r99.json
JSON Data
https://api.osv.dev/v1/vulns/GHSA-2434-3x6q-8r99
Aliases
Downstream
Published
2026-07-22T22:23:29Z
Modified
2026-07-22T22:31:07Z
Severity
  • 6.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N CVSS Calculator
Summary
n8n: External Secrets Accessible via Workflow Expressions Outside Credentials
Details

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.

Database specific 
{
    "cwe_ids":  [
        "CWE-639"
    ],
    "github_reviewed":  true,
    "github_reviewed_at":  "2026-07-22T22:23:29Z",
    "nvd_published_at":  null,
    "severity":  "MODERATE"
}
References

Affected packages

npm / n8n

Package

Name
n8n
View open source insights on deps.dev
Purl
pkg:npm/n8n

Affected ranges

Type
SEMVER
Events
Introduced
2.28.0
Fixed
2.28.1

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-2434-3x6q-8r99/GHSA-2434-3x6q-8r99.json"

npm / n8n

Package

Name
n8n
View open source insights on deps.dev
Purl
pkg:npm/n8n

Affected ranges

Type
SEMVER
Events
Introduced
0 Unknown introduced version / All previous versions are affected
Fixed
2.27.4

Database specific

source 
"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/07/GHSA-2434-3x6q-8r99/GHSA-2434-3x6q-8r99.json"