Classical T Tauri stars (CTTSs) are young low-mass stellar objects that accrete mass from their circumstellar disks characterized by high levels of coronal activity. Here, we investigate, using a 3D MHD model, if an intense coronal activity due to flares that occur close to the accretion disk may perturb the stability of the inner disk triggering accretion episodes. We observe the formation of several loops that link the star to the disk; all these loops build up a hot extended corona with an X-ray luminosity comparable with typical values observed in CTTSs. We found that the intense flaring activity close to the disk can strongly perturb the disk stability, in fact accretion funnels may be triggered by the flaring activity and thus contribute to the mass accretion rate of the star.