It was found that apt-key in apt, all versions, do not correctly validate gpg keys with the master keyring, leading to a potential man-in-the-middle attack.

Multiple SQL injection vulnerabilities in modules.php in APT-webshop-system 4.0 PRO, 3.0 BASIC, and 3.0 LIGHT allow remote attackers to execute arbitrary SQL commands via the (1) group, (2) seite, and (3) id parameter, possibly involving the artikel functionality. NOTE: this vulnerability also allows resultant path disclosure when the SQL queries are invalid.

Unspecified vulnerability in modules.php in APT-webshop-system 4.0 PRO, 3.0 BASIC, and 3.0 LIGHT allows remote attackers to access unspecified files via a modified warp parameter.

Cross-site scripting (XSS) vulnerability in APT-webshop-system 4.0 PRO, 3.0 BASIC, and 3.0 LIGHT allows remote attackers to inject arbitrary web script or HTML via the message parameter, probably involving the basket functionality.