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.
CVE-2026-59254
This medium-severity CVE scores 6.3 under the CNA's CVSS (NVD's own analysis pending). EPSS exploit-prediction score not yet available (the EPSS model rescores nightly; freshly-published CVEs typically appear within 48 hours). GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.3
- EG Score
- 6.3(low)
- EPSS
- —
- KEV
- Not listed
Published
July 15, 2026
Last Modified
July 15, 2026
Advisory Details (2)
Auto-updated Jul 15, 2026n8n - External Secrets Disclosure via Workflow Node Expressions | Advisories | VulnCheck
https://www.vulncheck.com/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressionsExternal Secrets Accessible via Workflow Expressions Outside Credentials · Advisory · n8n-io/n8n · GitHub
https://github.com/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99Vendor Advisories for CVE-2026-59254(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 2× in last 7d / 2× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-15 11:55 UTCEG score recompute
- 2026-07-15 11:54 UTCMITRE cvelistV5first tracked
Related CVEs(same CWE)
Same CWE
10 shownCWE-639
- CVE-2018-25270EG 9.8CRITICAL
- CVE-2017-20223EG 9.8CRITICAL
- CVE-2019-25487EG 9.8EPSS 94%CRITICAL
- CVE-2019-25235EG 9.8CRITICAL
- CVE-2020-16088EG 9.8CRITICAL
- CVE-2019-15310EG 9.8EPSS 94%CRITICAL
- CVE-2020-11658EG 9.8CRITICAL
- CVE-2019-15913EG 9.8CRITICAL
- CVE-2019-16340EG 9.8EPSS 97%CRITICAL
- CVE-2019-13360EG 9.8EPSS 98%CRITICAL
Frequently asked(4)
What is CVE-2026-59254?
When was CVE-2026-59254 disclosed?
What is the CVSS score of CVE-2026-59254?
How do I remediate CVE-2026-59254?
Dependency Blast Radius
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