medium5.8
CVE-2026-34964
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 …
Impact
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.
Affected products
| Product | Affected versions |
|---|---|
| Adminer | before 5.5.0 |
Versions were read from the advisory text. No structured product data has been published for this record yet.