---
cve: "CVE-2026-54303"
severity: "MEDIUM"
cvss: 6.8
epss: "18%"
vendor: "n8n-io"
kev: false
exploited: false
published: "2026-06-23 16:17:01"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T14:39:28+02:00"
---

# CVE-2026-54303

> 6.8 MEDIUM · 🧪 PoC

## Beschreibung

n8n is an open source workflow automation platform. Prior to 2.24.0, an endpoint in the Meta and Microsoft Teams trigger nodes reflects a query parameter into the HTTP response without sanitization or Content-Security-Policy headers, enabling reflected XSS in the n8n origin when a logged-in user visits a crafted URL. This vulnerability is fixed in 2.24.0.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/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 | Gering | warn |

## Patch verfügbar (OSV)

- 6c321ea2a026ea5da6c32e3818455b1d3296bd78 (Commit)

## Referenzen

- <https://github.com/n8n-io/n8n/security/advisories/GHSA-h86q-fx34-gfjr>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-54303) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_