CVE-2026-59254 · Symaro Security Advisory

Description

n8n before 2.28.1 contains an information disclosure vulnerability where external secrets are incorrectly resolved in workflow node expressions outside credentials scope. Authenticated project editors can read plaintext external secret values by referencing them in node expressions without requiring explicit secrets access permissions.

Severity (CVSS)

Base score	6.3
Severity	Medium
Version	CVSS 4.0
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
Provided by	CNA

Weaknesses

CWE-639 — Authorization Bypass Through User-Controlled Key

Affected products

Vendor	Product	Versions
n8n	n8n	0 to <2.28.1; 2.28.1
n8n	n8n	0 to <2.27.4; 2.27.4

References

https://github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99 (vendor-advisory)
https://www.vulncheck.com/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressions (third-party-advisory)

Authoritative sources

This page is a snapshot. For the latest enrichment and updates, view the record on CVE.org or the NVD.

Generated from the official CVE List on 16 Jul 2026 07:01 UTC.