CVE-2026-56702: Vrana Adminer

High severity, CVSS 8.8. EPSS: 0.6% chance of exploitation in the next 30 days.

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.

Affected products

• Vrana Adminer: before 5.4.3 (fixed in 5.4.3)

Published 2026-08-25. Last modified 2026-09-08.