Updated bugzilla packages fix security vulnerabilities:

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 (CVE-2014-1571).

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 (CVE-2014-1572).

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 (CVE-2014-1573).