---
cve: "CVE-2026-42607"
severity: "CRITICAL"
cvss: 9.1
epss: "3.9%"
vendor: "getgrav"
kev: false
exploited: false
published: "2026-05-11 14:58:42"
tags: [cve, security, critical]
source: tsecurity.de CVE-Dossier
exported: "2026-09-06T10:55:55+02:00"
---

# CVE-2026-42607

> 9.1 CRITICAL · 🧪 PoC

## Beschreibung

Grav is a file-based Web platform. Prior to 2.0.0-beta.2, an authenticated user with administrative privileges can achieve Remote Code Execution (RCE) by uploading a specially crafted ZIP file through the "Direct Install" tool. While the system attempts to block direct .php file uploads, it fails to inspect the contents of uploaded ZIP archives. Once a malicious plugin is extracted, it can execute arbitrary PHP code or drop a persistent web shell on the server. This vulnerability is fixed in 2.0.0-beta.2.

## CVSS-Vektor

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

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

## Exploit-Evidenz

- [EDB-52578 — Grav CMS 2.0.0-beta.2 -  Remote Code Execution](https://www.exploit-db.com/exploits/52578)

## Patch verfügbar (OSV)

- 5a12f9be8314682c8713e569e330f11805d0a663 (Commit)

## Referenzen

- <https://github.com/getgrav/grav/security/advisories/GHSA-w48r-jppp-rcfw>
- <https://github.com/getgrav/grav/commit/5a12f9be8314682c8713e569e330f11805d0a663>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-42607) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_