A search for a very light Higgs boson decaying into a pair of tau leptons is presented within the framework of the next-to-minimal supersymmetric standard model. This search is based on data from proton-proton collisions collected by the CMS experiment at 8 TeV. Since no excess was found, an upper limit on the production was set. We look at an overview of the search, and its subsequent interpretation within the NMSSM