Bugzilla multiple security issues

Bugzilla Security Advisory

Unauthorized Account Creation
An attacker creating a new Bugzilla account can override certain
parameters when finalizing the account creation that can lead to the
user being created with a different email address than originally
requested. The overridden login name could be automatically added
to groups based on the group’s regular expression setting.
Cross-Site Scripting
During an audit of the Bugzilla code base, several places
were found where cross-site scripting exploits could occur which
could allow an attacker to access sensitive information.
Information Leak
If a new comment was marked private to the insider group, and a flag
was set in the same transaction, the comment would be visible to
flag recipients even if they were not in the insider group.
Social Engineering
Search results can be exported as a CSV file which can then be
imported into external spreadsheet programs. Specially formatted
field values can be interpreted as formulas which can be executed
and used to attack a user’s computer.