I guess Apple products are just as vulnerable as other products when someone dedicates the time to attack them. They found 3 zero-day vulnerabilities.
I have had to correct people multiple times when they say "Apple products can't be hacked like Windows products can." I say, No they (Apple/Mac) are not just a big enough target for people to monetize yet, but wait, it will come. They may not have as many vulnerabilities as Windows do now, but wait, it will come.
According to the article, Apple has corrected all of the seven identified flaws in Safari. Another example of why we should allow trustworthy prime s/w suppliers like Apple, MicroSoft, Adobe, and others, to update automatically.