What is CVE-2026-56702?

CVE-2026-56702 is a high-severity vulnerability in Vrana Adminer, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-08-25.

How severe is CVE-2026-56702?

High severity. CVSS v3 base score is 8.8 out of 10.

Arbitrary file upload in Vrana Adminer

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.

Vulnerability class: Unrestricted File Upload

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Vrana Adminer

Weakness classification (CWE)

CWE-434 — Unrestricted Upload of File with Dangerous Type

References

disclosure@vulncheck.com (vendor-advisory)
disclosure@vulncheck.com (third-party-advisory)

Frequently asked questions

What is CVE-2026-56702?: CVE-2026-56702 is a high-severity vulnerability in Vrana Adminer, classified under Unrestricted Upload of File with Dangerous Type. CVSS score: 8.8/10. Published 2026-08-25.
How severe is CVE-2026-56702?: High severity. CVSS v3 base score is 8.8 out of 10.