Unspecified vulnerability in the PayPal Website Payments Standard functionality in the Ubercart module 5.x before 5.x-1.9 and 6.x before 6.x-2.1 for Drupal, when a custom checkout completion message is enabled, allows attackers to obtain sensitive information via unknown vectors.
https://exchange.xforce.ibmcloud.com/vulnerabilities/54345
http://www.securityfocus.com/bid/37058