From: Apple Product Security
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APPLE-SA-2015-05-06-1 Safari 8.0.6, Safari 7.1.6, and Safari 6.2.6

Safari 8.0.6, Safari 7.1.6, and Safari 6.2.6 are now available and
address the following:

WebKit
Available for:  OS X Mountain Lion v10.8.5, OS X Mavericks v10.9.5,
and OS X Yosemite v10.10. [...]