CVE-2026-85165 json
n8n before 2.36.2 Expression Sandbox Bypass via SpreadElement
published 2026-09-03 2 mo ago modified 2026-10-29 10 d ago also EUVD-2026-70400
- cvss
- 9.9
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.6%
- EPSS 0.6% chance of exploitation in 30 days, percentile 47%
- public exploits
- 0
- none known
Summary
n8n versions before 2.36.2 contain an expression sandbox bypass vulnerability where free identifiers in spread, computed-key, switch-case, or class-extension positions resolve against process globals. Authenticated users with workflow-edit permission can mutate host objects through expression evaluation, with changes persisting process-wide until restart.
Patch / fix
- n8n-io n8n 2.35.4, 2.36.2
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 2 mo ago
Exploit prediction
0.57% chance of exploitation in the next 30 days, higher than 47% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 7.2 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:H/VA:H/SC:N/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 |
| NVD | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected products
- n8n-io n8n
Classification
- Weakness
-
- CWE-95 Improper Neutralization of Directives in Dynamically Evaluated Code
References
-
github.com
/n8n-io/n8n/security/advisories/GHSA-fg85-4wv2-p98j
vendor-advisory, mitigation
-
vulncheck.com
/advisories/n8n-before-2.36.2-expression-sandbox-bypass-via-spreadelement
third-party-advisory
Sources
- CVE List CVE-2026-85165
- NVD CVE-2026-85165
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