Varnish Cache is a high-performance HTTP accelerator. It stores web pages in memory so web servers don"t have to create the same web page over and over again, giving the website a significant speed up. The following packages have been upgraded to a later upstream version: varnish . Security Fix: * varnish: denial of service handling certain crafted HTTP/1 requests * varnish: remote clients may cause Varnish to assert and restart which could result in DoS * varnish: not clearing pointer between two client requests leads to information disclosure For more details about the security issue, including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page listed in the References section. Additional Changes: For detailed information on changes in this release, see the CentOS 8.3 Release Notes linked from the References section.