---
cve: "CVE-2026-85169"
severity: "HIGH"
cvss: 8.7
epss: "0.5%"
vendor: "n8n-io"
kev: false
exploited: false
published: "2026-09-03 11:22:18"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-21T23:11:26+02:00"
---

# CVE-2026-85169

> 8.7 HIGH · 🧪 PoC

## Beschreibung

n8n versions before 1.123.73, 2.35.4, and 2.36.2 contain an expression sandbox escape in the $fromAI handler. $fromAI resolved a caller-supplied placeholder name without requiring it to be an own property and admitted reserved keys; against a primitive input value it returned a live host-prototype reference. An attacker with workflow-build privilege can walk the prototype chain to the Function constructor and compile/execute arbitrary code in the main n8n process, leading to remote code execution.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Gering | warn |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- 1a4cb1caa9002e17f67ccfb2e9f95c92c38b7779 (Commit)
- d2ce3c084c228622c2ffe7c245d25870430e18a9 (Commit)

## Referenzen

- <https://github.com/n8n-io/n8n/security/advisories/GHSA-9x83-43r8-5hwc>
- <https://www.vulncheck.com/advisories/n8n-before-1.123.73-remote-code-execution-via-fromai-prototype-leak>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-85169) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_