Bugzilla before 2.14 does not properly escape untrusted parameters which could allow remote attackers to conduct unauthorized activities via cross-site scripting (CSS) and possibly SQL injection attacks on (1) the product or output form variables for reports.cgi (2) the voteon bug_id and user variables for showvotes.cgi (3) an invalid email address in createaccount.cgi (4) an invalid ID in showdependencytree.cgi (5) invalid usernames and other fields in process_bug.cgi and (6) error messages in buglist.cgi.