adminer: Adminer before 5.5.0 contains a server-side request forgery vulnerability in the login form's server field validator,...
CVE-2026-34964 is fixed in adminer on 1 platform by DEBIAN-CVE-2026-34964 (version 6.0.0-1), released August 27, 2026. It is not reported as exploited. Patch Radar priority: Routine.
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.
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| adminer · Debian 14 | 6.0.0-1 | DEBIAN-CVE-2026-34964 | Aug 27, 2026 |
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