CVE-2026-56702

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 v3 8.8 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

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

Configurations

No configuration.

History

No history.

Information

Published : 2026-08-25 02:16

Updated : 2026-09-08 20:23

NVD link : CVE-2026-56702

Mitre link : CVE-2026-56702

CVE.ORG link : CVE-2026-56702

JSON object : View

Products Affected

No product.

CWE

CWE-434

Unrestricted Upload of File with Dangerous Type

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