---
cve: "CVE-2026-71285"
severity: "HIGH"
cvss: 8.1
epss: "22%"
vendor: "louislam"
kev: false
exploited: false
published: "2026-08-05 13:24:53"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T06:07:55+02:00"
---

# CVE-2026-71285

> 8.1 HIGH · 🧪 PoC

## Beschreibung

Uptime Kuma's Matomo analytics integration (server/analytics/matomo-analytics.js) injects the admin-configurable Matomo value as a bare, unquoted JavaScript expression inside a  block rendered on every public status page. A siteId value such as , once saved by an editor/admin, executes arbitrary JavaScript for every unauthenticated visitor of the public /status/ page, enabling session-cookie theft and full page takeover.

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:C/C:H/I:H/A:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Hoch | good |
| UI Interaktion | Erforderlich | good |
| S Scope | Verändert | bad |
| C Vertraulichkeit | Hoch | bad |
| I Integrität | Hoch | bad |
| A Verfügbarkeit | Keine | good |

## Referenzen

- <https://github.com/louislam/uptime-kuma>
- <https://github.com/louislam/uptime-kuma/blob/master/server/analytics/matomo-analytics.js>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-71285) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_