CVE-2026-56702

Description

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.

CVSS Vector

References

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