CVE 2010-1389
Cross-site scripting (XSS) vulnerability in WebKit in Apple Safari before 5.0 on Mac OS X 10.5 through 10.6 and Windows, and before 4.1 on Mac OS X 10.4, allows user-assisted remote attackers to inject arbitrary web script or HTML via vectors involving a (1) paste or (2) drag-and-drop operation for a selection.
See the 
CVE page on Mitre.org
for more details.
