Well if this exploit gets out without Apple fixing this, then it is a big deal.
Besides reading your text,contacts and emails, it can also Send text and make calls from your cell phone usage. Noone need to stop using safari but Now they atleast know to be aware that not everylink on a forum or Email is safe. If this gets out what stops someone here to posting the link and BAM, Watch that phone bill skyrocket for calls made to ASIA under your name . Or your bank account cleared by doing a simple transfer of funds. I know I check my Bank every few days on my iPhone.