CVE-2026-59254: n8n: External Secrets Accessible via Workflow Expressions Outside Credentials
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.
References
- github.com/advisories/GHSA-2434-3x6q-8r99
- github.com/n8n-io/n8n/releases/tag/n8n%402.27.4
- github.com/n8n-io/n8n/releases/tag/n8n%402.28.1
- github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99
- nvd.nist.gov/vuln/detail/CVE-2026-59254
- www.vulncheck.com/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressions
Code Behaviors & Features
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