This was covered here last year when these machines were new. try to took for MBP CD heat issues.
Some people solved it opening the machines and re-applying the thermal paste.
In your case, maybe be a bit off limits (If happens too often with processors not at 100%). Give your Apple branch a call explaining them the issue, sure they will let you know of any warranty extension that should exist in case you do not have Apple Care (3 years).
You can also try to increase the speed of your fans a bit, that may help. But if the problem persists, a repair may be the only way. (Do the Fans spin, don't they ?)