Konqueror 3.x up to 3.2.2-6, and possibly other versions, allows remote attackers to spoof arbitrary web sites by injecting content from one window into a target window or tab whose name is known but resides in a different domain, as demonstrated using a pop-up window on a trusted web site, aka the "window injection" vulnerability.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11056
http://www.redhat.com/support/errata/RHSA-2005-009.html
http://www.novell.com/linux/security/advisories/2005_01_sr.html
http://www.kde.org/info/security/advisory-20041213-1.txt
http://secunia.com/secunia_research/2004-13/advisory/
http://secunia.com/advisories/13560
http://secunia.com/advisories/13486
http://secunia.com/advisories/13477