Safari 3.1.1 for Leopard and Tiger, includes improvements to stability, compatibility and security. The security fixes address two vulnerabilities .
WebKit
CVE-ID: CVE-2008-1025
Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.2, Mac OS X Server v10.5.2
Impact: Visiting a malicious website may result in cross-site scripting
WebKit
CVE-ID: CVE-2008-1026
Available for: Mac OS X v10.4.11, Mac OS X Server v10.4.11, Mac OS X v10.5.2, Mac OS X Server v10.5.2
Impact: Viewing a maliciously crafted web page may lead to an unexpected application termination or arbitrary code execution