The XSLT functionality in WebKit in Apple Safari before 4.0 does not properly implement the document function, which allows remote attackers to read (1) arbitrary local files and (2) files from different security zones via unspecified vectors.
lists.apple.com/archives/security-announce/2009/jun/msg00002.html
lists.opensuse.org/opensuse-security-announce/2011-01/msg00006.html
osvdb.org/54975
secunia.com/advisories/35379
secunia.com/advisories/43068
support.apple.com/kb/HT3613
www.securityfocus.com/bid/35260
www.ubuntu.com/usn/USN-857-1
www.vupen.com/english/advisories/2009/1522
www.vupen.com/english/advisories/2011/0212
exchange.xforce.ibmcloud.com/vulnerabilities/51267