CVE-2026-34964

Medium

Description

Adminer before 5.5.0 contains a server-side request forgery vulnerability in the login form's server field validator, which only inspects leading integers for privileged ports and fails to reject non-numeric port values. Attackers can inject PDO DSN keys like host= and port= into the server parameter to bypass the privileged-port restriction and establish TCP connections to arbitrary internal hosts and ports before authentication.

SeverityMedium

CVSS5.8

Exploit probability—

Product

Vrana Adminer

PublishedAug 25, 2026

First seenAug 25, 2026

Weakness typeCWE-918Server-side request forgery (SSRF)

How to fix

Update

vrana adminer5.5.0 or later

Vendor advisories

github.com/vrana/adminer/security/advisories/GHSA-58cq-mgw2-38m5

Affected products

Product	Affected versions	Fixed in
vrana adminer	v < 5.5.0	5.5.0

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.