SQL injection vulnerability in admin/plib/api-rpc/Agent.php in Parallels Plesk Panel 7.x and 8.x before 8.6 MU#2, 9.x before 9.5 MU#11, 10.0.x before MU#13, 10.1.x before MU#22, 10.2.x before MU#16, and 10.3.x before MU#5 allows remote attackers to execute arbitrary SQL commands via unspecified vectors, as exploited in the wild in March 2012.

The billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 generates a password form field without disabling the autocomplete feature, which makes it easier for remote attackers to bypass authentication by leveraging an unattended workstation, as demonstrated by forms on certain pages under admin/index.php/default.

Multiple cross-site scripting (XSS) vulnerabilities in the billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 allow remote attackers to inject arbitrary web script or HTML via crafted input to a PHP script, as demonstrated by admin/index.php/default and certain other files.

The billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 does not prevent the use of weak ciphers for SSL sessions, which makes it easier for remote attackers to defeat cryptographic protection mechanisms via a crafted CipherSuite list.

The billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 has web pages containing e-mail addresses that are not intended for correspondence about the local application deployment, which allows remote attackers to obtain potentially sensitive information by reading a page, as demonstrated by js/ajax/core/ajax.inc.js and certain other files.

The billing system for Parallels Plesk Panel 10.3.1_build1013110726.09 does not disable the SSL 2.0 protocol, which makes it easier for remote attackers to conduct spoofing attacks by leveraging protocol weaknesses.