In the context of software distribution, a repack is a re-created package or distribution that is based on an original package or distribution. Repacks are often created to provide a more customized or updated version of the original distribution. In the case of FC26 Repack, it implies that the original Fedora 26 distribution has been re-packaged, possibly with additional software, tweaks, or modifications.
Because repacks are executable files ( .exe ) created by anonymous third parties, they are a prime vector for malware. fc26 repack