libxml2 2.9.1 is released. Here is changelog http://xmlsoft.org/news.html The new version is already available in custombuild. But remember you need to have new_xml2=yes in options.conf if want the newer versions.
Edit: To upgrade libxml2, I think it is also needed to recompile libxslt and php, see this related post http://forum.directadmin.com/showthread.php?t=44626
Edit: To upgrade libxml2, I think it is also needed to recompile libxslt and php, see this related post http://forum.directadmin.com/showthread.php?t=44626
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