---
cve: "CVE-2026-53520"
severity: "MEDIUM"
cvss: 6.5
epss: "0.4%"
vendor: "nezhahq"
kev: false
exploited: false
published: "2026-06-12 22:16:52"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-10-03T07:59:08+02:00"
---

# CVE-2026-53520

> 6.5 MEDIUM · 🧪 PoC

## Beschreibung

Nezha Monitoring is a self-hostable, lightweight, servers and websites monitoring and O&M tool. From version 2.0.14 to before version 2.1.0, authenticated users can claim the dashboard Host through NAT and preempt all dashboard routing. This issue has been patched in version 2.1.0.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 1d70d2992ec7ee5fac2e12ce15d0ea8005a589d4 (Commit)

## Referenzen

- <https://github.com/nezhahq/nezha/security/advisories/GHSA-x6fg-52vr-hj4w>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-53520) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_