The Apple Java plugin, as used in Netscape 7.1 and 7.2, Mozilla 1.7.2, and Firefox 0.9.3 on MacOS X 10.3.5, when tabbed browsing is enabled, does not properly handle SetWindow(NULL) calls, which allows Java applets from one tab to draw to other tabs and facilitates phishing attacks that spoof tabs.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17137
https://euvd.enisa.europa.eu/vulnerability/EUVD-2004-1747
http://www.securityfocus.com/bid/11059
http://www.securityfocus.com/archive/1/373309
http://www.securityfocus.com/archive/1/373232
http://www.securityfocus.com/archive/1/373080