Safari in WebKit in Mac OS X 10.4 to 10.4.2 directly accesses URLs within PDF files without the normal security checks, which allows remote attackers to execute arbitrary code via links in a PDF file.
Apple Safari 1.3 (132) on Mac OS X 1.3.9 allows remote attackers to cause a denial of service (crash) via certain Javascript, possibly involving a function that defines a handler for itself within the function body.