Apple has informed AppleCare representatives and Apple Retail that it has updated the Safari web browser’s built-in plugin blocker to disable older versions of Oracle’s Java 6 and 7 software.

In recent days, a new Java vulnerability was discovered. The latest issue is described on the National Vulnerability Database:

The issue could allow a hacker to input malicious code into a user’s web browser, and it has been rated as a flaw of “extreme importance.”

To project Safari users, Apple has blocked Java 6 versions below update 51, and Java 7 versions below update 25.