xsl:include and xsl:import can include XSLT stylesheets from arbitrary domains including those behind the user's firewall. This at least allows for existence checking of these files; it's not clear how much, if any, data could be extracted from arbitrary XML files. http://www.mozilla.org/security/announce/mfsa2005-20.html
An advisory has been issued which should help the problem described in this bug report. This report is therefore being closed with a resolution of ERRATA. For more information on the solution and/or where to find the updated files, please follow the link below. You may reopen this bug report if the solution does not work for you. http://rhn.redhat.com/errata/RHSA-2005-176.html