Unspecified vulnerability in Apple Safari on Mac OS X 10.5 and Windows allows remote attackers to read arbitrary files on a client machine via vectors related to the association of Safari with the (1) feed, (2) feeds, and (3) feedsearch URL types for RSS feeds.  NOTE: as of 20090114, the only disclosure is a vague pre-advisory. However, because it is from a well-known researcher, it is being assigned a CVE identifier for tracking purposes.