Multiple vulnerabilities have been reported in the Webform CiviCRM Integration module for Drupal, which can be exploited by malicious people to conduct SQL injection attacks.
Certain unspecified input is not properly sanitised before being used in a SQL query. This can be exploited to manipulate SQL queries by injecting arbitrary SQL code.
The vulnerabilities are reported in versions 6.x-2.1 and 7.x-2.1.