After the discovery of a Higgs boson, it is of great importance to study its properties under a minimal set of assumptions. The definition of a fiducial phase-space for the measurement of cross sections allows to minimise uncertainties due to extrapolations and to model dependence. A measurement of the Higgs boson differential fiducial cross sections is performed in several final states, including diphoton and ZZ channels, using 36/fb of pp collisions at a center-of-mass energy of 13 TeV collected by the CMS experiment at the LHC. The fiducial cross sections are measured as a function of kinematic observables characterising the production mechanism of the Higgs boson. A review of the analysis strategy and event categorisation will be provided and the most recent results will be shown.