🛡️ CVE-2026-59254 — n8n

⚪ Unknown ✅ No Known Exploit CWE-639 NVD
N/A
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

n8n: External Secrets Accessible via Workflow Expressions Outside Credentials

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.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. Rated impact: confidentiality none, integrity none, availability none.

Weakness class

CVE-2026-59254 is classified as CWE-639: Authorization Bypass Through User-Controlled Key. An object is selected by an identifier from the request without checking the caller owns it.

Affected software

CVE-2026-59254 is recorded against 2 packages.

  • n8n
  • unknown

Timeline and source

Published on 22 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com (Web)
nvd.nist.gov (Advisory)
github.com (Package)
github.com (Web)
github.com (Web)
www.vulncheck.com (Web)

Details

Severity Unknown
CVSS Score N/A
CVSS Vector 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
CWE CWE-639
Public Exploit ✅ No
Source NVD
Published 2026-07-22
Updated 2026-08-12
Modified 2026-07-22
Fix URL N/A

Affected Packages

Software From version Fixed in
n8n — —
unknown — —

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