Along with Apple’s release of 10.5.7 yesterday, Apple has also quietly updated Safari 4 and 3 with security patches.
The update for Safari repaired input validation and memory corruption issues which could have allowed hackers to plant malicious code on websites.
The update was included for Mac users who have already installed the 10.5.7 update, or an updated version of the browser can be downloaded and installed manually from the Apple Safari website.