A vulnerability has been reported in phpMyAdmin, which can be exploited by malicious people to conduct cross-site scripting attacks.
Certain input passed to setup.php is not properly sanitised before being returned to the user. This can be exploited to execute arbitrary HTML and script code in a user's browser session in context of an affected site.
NOTE: Successful exploitation requires that installation best-practices have not been followed and the config directory is left writable.
The vulnerability is reported in version 3.4.5. Other versions may also be affected.