Safari 5.1.7で発見し、Safari 6で修正された、feed:// URLのUXSSについて書きます。 http://support.apple.com/kb/HT5400 Safari Available for: OS X Lion v10.7.4, OS X Lion Server v10.7.4 Impact: Visiting a maliciously crafted website may lead to a cite scripting attack Description: A cite scripting issue existed in the haemoves ha