The Download Validation in LaunchServices for Apple Mac OS X 10.4.7 can identify certain HTML as "safe", which could allow attackers to execute Javascript code in local context when the "Open 'safe' files after downloading" option is enabled in Safari.
https://exchange.xforce.ibmcloud.com/vulnerabilities/28146
http://www.vupen.com/english/advisories/2006/3101
http://www.us-cert.gov/cas/techalerts/TA06-214A.html
http://www.securityfocus.com/bid/19289
http://secunia.com/advisories/21253
http://lists.apple.com/archives/security-announce/2006//Aug/msg00000.html