High severity8.8NVD Advisory· Published Aug 25, 2026

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.

Affected products

Vrana/adminerllm-fuzzy
Range: <5.4.3
Adminer/Adminerllm-fuzzy
Range: <5.4.3

Patches

Vulnerability mechanics

References

github.com/vrana/adminer/security/advisories/GHSA-vcvj-rwwm-x6g5nvd
www.vulncheck.com/advisories/adminer-before-unrestricted-file-upload-via-adminerfileuploadnvd

News mentions

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cvss	0.572
epss	0.000
exploit	0.000
kev	0.000
patch	-0.070
ransomware	0.000