---
cve: "CVE-2026-56703"
severity: "HIGH"
cvss: 8.6
epss: "1.1%"
vendor: "vrana"
kev: false
exploited: false
published: "2026-08-25 02:16:42"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-01T03:53:06+02:00"
---

# CVE-2026-56703

> 8.6 HIGH · 🧪 PoC

## Beschreibung

Adminer before 5.4.3 contains a remote code execution vulnerability in SQLite query handling where VACUUM INTO is not blocked despite ATTACH restrictions. Authenticated attackers can execute VACUUM INTO to write PHP code to arbitrary file paths and execute commands on the server.

## 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:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
```

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

## Patch verfügbar (OSV)

- 189869c4a8f0f897848cdb58493b572178084d6c (Commit)

## Referenzen

- <https://github.com/vrana/adminer/security/advisories/GHSA-gmx3-g29w-77wf>
- <https://www.vulncheck.com/advisories/adminer-before-remote-code-execution-via-sqlite-vacuum-into>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-56703) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_