Unspecified vulnerability in the Java Runtime Environment (JRE) component in Oracle Java SE 7 through Update 11 and 6 through Update 38, and OpenJDK 6 and 7, allows remote attackers to affect confidentiality via vectors related to JAX-WS. NOTE: the previous information is from the February 2013 CPU. Oracle has not commented on claims from another vendor that this issue is related to improper restriction of com.sun.xml.internal packages and "Better handling of UI elements." Per http://www.oracle.com/technetwork/topics/security/javacpufeb2013-1841061.html
"Applies to client deployment of Java only. This vulnerability can be exploited only through untrusted Java Web Start applications and untrusted Java applets. (Untrusted Java Web Start applications and untrusted applets run in the Java sandbox with limited privileges.)"