Cross-site scripting (XSS) vulnerability in index.php in Aardvark Topsites PHP 5.2.0 and earlier allows remote attackers to inject arbitrary web script or HTML via the q parameter in a search action. NOTE: it was later reported that 5.2.1 is also affected.

index.php in Aardvark Topsites PHP 5.2.0 and earlier allows remote attackers to obtain sensitive information via a nonexistent account name in the u parameter in a rate action, which reveals the installation path in an error message.

index.php in Aardvark Topsites PHP 5.2.1 and earlier allows remote attackers to obtain sensitive information via a negative integer value for the start parameter in a search action, which reveals the installation path in an error message.

PHP remote file inclusion vulnerability in sources/lostpw.php in Aardvark Topsites PHP 4.2.2 and earlier, when register_globals is enabled, allows remote attackers to execute arbitrary PHP code via the CONFIG[path] parameter, as demonstrated by including a GIF that contains PHP code.