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CVE-2026-59254

n8n - External Secrets Disclosure via Workflow Node Expressions

MEDIUM
6.3
CVSS Score
Published: July 15, 2026 at 11:25 AM UTC
Updated: October 29, 2026 at 09:16 PM UTC
1 product affected across 1 vendorN8N

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Severity
MEDIUM6.3
Exploit prediction
EPSS 0.4%
SSVC
No known exploit

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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

N8N· N8Nnpm
90%
0 ≤ v < 2.27.40 ≤ v < 2.28.10
Vendor states this is fixed in 2.27.4 (unaffected)
Vendor states this is fixed in 2.28.1 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

Patch and advisory references

References (2)

Vendor Advisory
Source: cverecord
https://github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99
Third Party Advisory
Source: cverecord
https://www.vulncheck.com/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressions

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

6.3MEDIUMVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-639

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