Cross-site scripting (XSS) vulnerability in Horde Vacation module before 2.2.2 allows remote attackers to inject arbitrary web script or HTML via the parent's frame page title.
http://secunia.com/advisories/15073
http://lists.horde.org/archives/sork/Week-of-Mon-20050418/002148.html
http://cvs.horde.org/diff.php/vacation/docs/CHANGES?r1=1.1.1.1.2.21&r2=1.1.1.1.2.26&ty=h