Provide references for CVE-2021-28543.
Where can I find more information about CVE-2021-28543?
References are available at: https://varnish-cache.org/security/VSV00006.html, https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/OPFBRQUJNWHCB3GQHSSAPRLQU6Q6PY43/.