CVE-2026-59254 json
n8n - External Secrets Disclosure via Workflow Node Expressions
published 3mo ago modified 13d ago also EUVD-2026-44634 , GHSA-2434-3x6q-8r99
- cvss
- 6.3
- version 4.0, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 30%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- npm n8n 2.27.4, 2.28.1
- n8n n8n 2.27.4, 2.28.1
Is CVE-2026-59254 in your dependencies? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.
Check with FencerCISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 3mo ago
Exploit prediction
0.36% chance of exploitation in the next 30 days, higher than 30% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 6.3 | 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 |
| CNA | 4.0 | 6.3 | 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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| npm | n8n | >=2.28.0, <2.28.1 <2.27.4 |
2.28.1 2.27.4 |
Affected products
- n8n n8n
Classification
- Weakness
-
- CWE-639 Authorization Bypass Through User-Controlled Key
References
-
github.com
/n8n-io/n8n/security/advisories/GHSA-2434-3x6q-8r99
vendor-advisory, web
-
vulncheck.com
/advisories/n8n-external-secrets-disclosure-via-workflow-node-expressions
third-party-advisory, web
-
nvd.nist.gov
/vuln/detail/CVE-2026-59254
advisory
-
github.com
/n8n-io/n8n
package
-
github.com
/n8n-io/n8n/releases/tag/n8n%402.27.4
web
-
github.com
/n8n-io/n8n/releases/tag/n8n%402.28.1
web
Sources
- CVE List CVE-2026-59254
- GitHub Advisory GHSA-2434-3x6q-8r99
- NVD CVE-2026-59254
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.