---
cve: "CVE-2026-72766"
severity: "HIGH"
cvss: 8.2
epss: "28%"
vendor: "n8n-io"
kev: false
exploited: false
published: "2026-08-11 13:19:06"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T15:24:02+02:00"
---

# CVE-2026-72766

> 8.2 HIGH · 🧪 PoC

## Beschreibung

n8n before 1.123.67, 2.x before 2.31.5, and 2.32.x before 2.32.1 contain a type confusion vulnerability in the Send Email node, which does not enforce that its message fields are strings. A crafted non-string value supplied from a workflow expression into the text or HTML body field can be interpreted by the underlying mail library (Nodemailer) as a file path or URL, allowing arbitrary local file disclosure and server-side request forgery (SSRF). Exploitation requires a pre-existing active workflow with an unauthenticated webhook, valid SMTP credentials configured on the node, and untrusted input mapped directly into the body field; this is not a default configuration.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- ff05cd3be8c4a8f2ac73f42b54f5213493810313 (Commit)
- aa3d214338d610300c3c7c70f0ed08e5675bc722 (Commit)

## Referenzen

- <https://github.com/n8n-io/n8n/security/advisories/GHSA-2x35-3fw4-9jr4>
- <https://www.vulncheck.com/advisories/n8n-before-arbitrary-file-read-via-send-email-node>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-72766) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_