RCE in N8n
CVE-2026-85165
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.9 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H.
EPSS exploit prediction
EPSS: 0.006 (46.2th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 46th percentile — 46.2% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.006 · change: +0.003
Affected products
Weakness classification (CWE)
References
- github.com/n8n-io/n8n/security/advisories/GHSA-fg85-4wv2-p98j (vendor-advisory, Mitigation, Vendor Advisory)
- www.vulncheck.com/advisories/n8n-before-2.36.2-expression-sandbox-bypass-via-sp… (Third Party Advisory, third-party-advisory)
Frequently asked questions
- What is CVE-2026-85165?
- CVE-2026-85165 is a critical-severity vulnerability in N8n, classified under Eval Injection. CVSS score: 9.9/10. Published 2026-09-03.
- How severe is CVE-2026-85165?
- Critical severity. CVSS v3 base score is 9.9 out of 10.