Cross-site scripting (XSS) vulnerability in Xapian Omega before 1.0.16 allows remote attackers to inject arbitrary web script or HTML via unspecified CGI parameter values, which are sometimes included in exception messages.
http://www.securityfocus.com/bid/36317
http://www.debian.org/security/2009/dsa-1882
http://svn.xapian.org/%2Acheckout%2A/tags/1.0.16/xapian-applications/omega/NEWS
http://secunia.com/advisories/36693
http://secunia.com/advisories/36674
http://lists.xapian.org/pipermail/xapian-discuss/2009-September/007115.html