Downloads for Zeek 4.0.8 and Zeek 5.0.1 are available:
Zeek: Get Zeek
https://download.zeek.org/zeek-4.0.8.tar.gz
https://download.zeek.org/zeek-5.0.1.tar.gz
See the release notes for details of the addressed bugs and security issues:
Release v4.0.8 · zeek/zeek · GitHub
Release v5.0.1 · zeek/zeek · GitHub
Binary packages for the new releases will also be available shortly: