CVE-2026-59254

Medium

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.

SeverityMedium

CVSS6.3

Exploit probability—

ProductN8n

PublishedJul 15, 2026

First seenJul 15, 2026

Weakness typeCWE-639Authorization bypass through user-controlled key

How to fix

Update

n8n2.28.1, 2.27.4 or later

Vendor advisories

github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99

Affected products

Product	Affected versions	Fixed in
n8nnpm	2.28.0 ≤ v < 2.28.1, v < 2.27.4	2.28.1, 2.27.4

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