Whats wrong with ,y front brakes?!

[striker1001]

So i came back from riding yesterday and while i was riding my 400, i noticed my front brake lever had this liquid on it. Long and behold its brake fluid. The fluid i believe is coming from the top of fluid resevoir. It only seeps through the top however if i use the front brakes...if i dont, it doesnt leak. Can someone please tell me whats wrong with my front brakes. Thanx

[400eXr1d3rZ]

It just has a little leak, try tightening the resivior cap or replace the sealer (if it has one, a little rubber peice under it)