Recently, three GRBs were detected in the VHE regime with atmospheric Cherenkov
telescopes MAGIC and HESS. These long-awaited results may seem to confirm the standard
paradigm for the high-energy emission by GRB: efficient leptonic sources generating a
bright synchrotron and a (fainter) synchrotron-self-Compton components. However, certain
aspects of the signal, e.g., its spectral shape in the VHE regime, challenge the
paradigm and demand for a deep revision of some fundamental elements.