Provide references for CVE-2019-16866.
Where can I find more information about CVE-2019-16866?
References are available at: https://github.com/NLnetLabs/unbound/blob/release-1.9.4/doc/Changelog, https://nlnetlabs.nl/downloads/unbound/CVE-2019-16866.txt, https://usn.ubuntu.com/4149-1/, https://www.debian.org/security/2019/dsa-4544, https://seclists.org/bugtraq/2019/Oct/23, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/E65NCWZZB2D75ZIYWPXKMVGSGNYW4JMC/, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/MLRHE7TQFAOV4MB2ELTOGESZYUL65NUJ/.