SQL injection vulnerability in the Search Autocomplete module before 7.x-2.1 for Drupal allows remote authenticated users with the "use search_autocomplete" permission to execute arbitrary SQL commands via unspecified vectors.
http://www.securityfocus.com/bid/51667
http://www.openwall.com/lists/oss-security/2012/04/07/1
http://secunia.com/advisories/47731
http://drupalcode.org/project/search_autocomplete.git/commit/589e8f6