---
cve: "CVE-2026-77080"
severity: "HIGH"
cvss: 8.7
epss: "27.1%"
vendor: "n8n-io"
kev: false
exploited: false
published: "2026-08-20 12:16:39"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-05T15:29:53+02:00"
---

# CVE-2026-77080

> 8.7 HIGH · 🧪 PoC

## Beschreibung

n8n before 1.123.69, 2.x before 2.33.4, and 2.34.x before 2.34.1 contain an arbitrary file read and write vulnerability in the Snowflake node, which passes free-form Execute Query input, including client-side commands, directly to the Snowflake SDK without applying n8n's file-access restrictions. An authenticated user with usable Snowflake credentials can upload a local file from the n8n host or overwrite an existing file with a staged one.

## 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)

- 430e6e597ab43d2326aa11cd30fcf633766fca31 (Commit)
- 14c9aef0552fb4776501ca1c4589451891dd0ef4 (Commit)

## Referenzen

- <https://github.com/n8n-io/n8n/security/advisories/GHSA-r4j2-j3wm-q689>
- <https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-and-write-via-snowflake>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-77080) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_