WordPress Plugin WP eCommerce HTML Injection - CVE-2011-5104

WordPress Plugin WP eCommerce is prone to an HTML injection vulnerability because it fails to properly sanitize user-supplied input. Attacker supplied HTML and script code could be executed in the context of the affected site potentially allowing the attacker to steal cookie-based authentication credentials or control how the site is rendered to the user other attacks are also possible. Successful exploitation requires the ability to add custom content to purchases. WordPress Plugin WP eCommerce version 3.8.7.1 is vulnerable prior versions may also be affected.