votes.cgi in Bugzilla 2.16.3 and earlier, and 2.17.1 through 2.17.4, allows remote attackers to read a user's voting page when that user has voted on a restricted bug, which allows remote attackers to read potentially sensitive voting information by modifying the who parameter.

editproducts.cgi in Bugzilla 2.16.3 and earlier, when usebuggroups is enabled, does not properly remove group add privileges from a group that is being deleted, which allows users with those privileges to perform unauthorized additions to the next group that is assigned with the original group ID.

SQL injection vulnerability in collectstats.pl for Bugzilla 2.16.3 and earlier allows remote authenticated users with editproducts privileges to execute arbitrary SQL via the product name.

SQL injection vulnerability in editusers.cgi in Bugzilla 2.16.x before 2.16.6, and 2.18 before 2.18rc1, allows remote attackers with privileges to grant membership to any group to execute arbitrary SQL.

Unknown vulnerability in the administrative controls in Bugzilla 2.17.1 through 2.17.7 allows users with "grant membership" privileges to grant memberships to groups that the user does not control.

Bugzilla 2.17.5 through 2.17.7 embeds the password in an image URL, which could allow local users to view the password in the web server log files.

DBI in Bugzilla 2.17.1 through 2.17.7 displays the database password in an error message when the SQL server is not running, which could allow remote attackers to gain sensitive information.

Bugzilla before 2.14 does not properly restrict access to confidential bugs, which could allow Bugzilla users to bypass viewing permissions via modified bug id parameters in (1) process_bug.cgi, (2) show_activity.cgi, (3) showvotes.cgi, (4) showdependencytree.cgi, (5) showdependencygraph.cgi, (6) showattachment.cgi, or (7) describecomponents.cgi.

Bugzilla before 2.14 stores user passwords in plaintext and sends password requests in an email message, which could allow attackers to gain privileges.

process_bug.cgi in Bugzilla before 2.14 does not set the "groupset" bit when a bug is moved between product groups, which will cause the bug to have the old group's restrictions, which might not be as stringent.