Cross-site scripting (XSS) vulnerability in wpsc-admin/display-sales-logs.php in WP e-Commerce plugin 3.8.7.1 and possibly earlier for WordPress allows remote attackers to inject arbitrary web script or HTML via the custom_text parameter. NOTE: some of these details are obtained from third party information.
https://exchange.xforce.ibmcloud.com/vulnerabilities/71443
http://www.securityfocus.com/bid/50757
http://wordpress.org/extend/plugins/wp-e-commerce/changelog/