To fix this bug you need to do the following:
cd /usr/local/interworx/ioncube/
rm -rf ./ioncube_loader_lin_5.5.so
wget -N https://licensecart.com/iworx/ioncube_loader_lin_5.5.so
chown iworx: ./ioncube_loader_lin_5.5.so
chmod 555 ./ioncube_loader_lin_5.5.so