This update for apache2 fixes the following issues: Apache2 was updated to the current stable version 2.4.51 It fixes all CVEs and selected bugs represented by patches found between 2.4.23 and 2.4.51. See https://downloads.apache.org/httpd/CHANGES_2.4 for a complete change log. Also fixed: - CVE-2021-44224: Fixed NULL dereference or SSRF in forward proxy configurations - CVE-2021-44790: Fixed buffer overflow when parsing multipart content in mod_lua