Javascript privilege esccalation and code execution, crossite scripting, multiple DoS conditions, URI and dialogs spoofing, local ports access from Java, privacy problems on SSL authentication.
CVE-2008-1195 (Unspecified vulnerability in Sun JDK and Java Runtime Environment (JRE) 6 Update 4 and earlier and 5.0 Update 14 and earlier; and SDK and JRE 1.4.2_16 and earlier; allows remote attackers to access arbitrary network services on the local host via unspecified vectors related to JavaScript and Java APIs.)
CVE-2007-4879 (Mozilla Firefox 2.0.x can automatically install TLS client certificates withminimal user interaction, and automatically sends these certificates when requested, which makes it easier for remote web sites to track user activities across domains by requesting the TLS client certificates from other domains.)