---
cve: "CVE-2026-65597"
severity: "HIGH"
cvss: 8.2
epss: "21%"
vendor: "n8n-io"
kev: false
exploited: false
published: "2026-07-22 12:18:19"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T14:39:17+02:00"
---

# CVE-2026-65597

> 8.2 HIGH · 🧪 PoC

## Beschreibung

n8n before 1.123.64, 2.x before 2.29.8, and before 2.30.1 contains a DOM-based cross-site scripting vulnerability in the HTML preview, which renders execution output into an iframe srcdoc without the sandbox attribute. A sanitizer bypass allows injected script to execute same-origin as the editor. When a victim opens the preview, the script can call authenticated APIs using the victim's session. An account with global:member privileges can exploit the issue.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 25d74f918253845e2ad25eb824238b49d0d8a30c (Commit)
- 7786117e976664b67288f13d6cfcd1fcf1b1289b (Commit)

## Referenzen

- <https://github.com/n8n-io/n8n/security/advisories/GHSA-p3rg-hrf9-w9gj>
- <https://www.vulncheck.com/advisories/n8n-before-dom-based-xss-via-unsandboxed-iframe>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-65597) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_