Buffer overflow in WebKit in Apple Safari before 4.0.3 allows remote attackers to execute arbitrary code or cause a denial of service (application crash) via crafted floating-point numbers.

WebKit in Apple Safari before 4.0.3 does not properly restrict the URL scheme of the pluginspage attribute of an EMBED element, which allows user-assisted remote attackers to launch arbitrary file: URLs and obtain sensitive information via a crafted HTML document.