During the generation of a dependency graph, the code for
the HTML image map is generated locally if a local dot
installation is used. With escaped HTML characters in a bug
summary, it is possible to inject unfiltered HTML code in
the map file which the CreateImagemap function generates.
This could be used for a cross-site scripting attack.
If an external HTML page contains a <script> element with
its src attribute pointing to a buglist in CSV format, some
web browsers incorrectly try to parse the CSV file as valid
JavaScript code. As the buglist is generated based on the
privileges of the user logged into Bugzilla, the external
page could collect confidential data contained in the CSV
file.