PT-2026-60132 · N8N · N8N

Ylchen-007 · Published 2026-07-15 · Updated 2026-07-15 · CVE-2026-59259

Mitre

CVSS v4.0

6.0

Medium

Base vector

AV:N/AC:L/AT:P/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

n8n before versions 1.123.61, 2.27.4, and 2.28.1 contains a permission bypass vulnerability in external secrets handling caused by a mismatch between the static validation check and the runtime expression engine. An authenticated user with credential create or update permissions but without the externalSecret:list scope can embed external secret references into credentials in forms the static validation does not detect; these references resolve at workflow execution time, exposing secret values the user is not authorized to access. This issue only affects instances where an external secrets provider is configured and Advanced Permissions are in use.

Fix

IDOR

Weakness Enumeration

CWE-639

Related Identifiers

CVE-2026-59259

Affected Products

N8N

References · 3

• https://github.com/n8n-io/n8n/security/advisories/GHSA-jp7m-xcgx-57qm · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-59259 · Security Note
• https://vulncheck.com/advisories/n8n-permission-bypass-via-expression-parser-mismatch-in-external-secrets · Note