---
cve: "CVE-2026-56702"
severity: "HIGH"
cvss: 7.1
epss: "0.3%"
vendor: "vrana"
kev: false
exploited: false
published: "2026-08-25 02:16:41"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-27T12:42:41+02:00"
---

# CVE-2026-56702

> 7.1 HIGH · 🧪 PoC

## Beschreibung

Adminer versions before 5.4.3 contain an unrestricted file upload vulnerability in the AdminerFileUpload plugin that allows authenticated users to upload PHP files by exploiting a permissive default extension allowlist. Attackers can upload PHP webshells to columns ending in _path and execute arbitrary code as the web-server user when uploadPath is web-served.

## CISA-Anreicherung (vulnrichment/ADP)

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

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- 189869c4a8f0f897848cdb58493b572178084d6c (Commit)

## Referenzen

- <https://github.com/vrana/adminer/security/advisories/GHSA-vcvj-rwwm-x6g5>
- <https://www.vulncheck.com/advisories/adminer-before-unrestricted-file-upload-via-adminerfileupload>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56702) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_