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A timing attack against mod_auth_digest in Apache HTTP Server 2.4.66 allows a bypass of Digest authentication by a remote attacker.
Users are recommended to upgrade to version 2.4.67, which fixes this issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade mod_ldapUpgrade mod_luaUpgrade httpd-toolsUpgrade httpd-filesystemUpgrade httpd-coreUpgrade httpd-develUpgrade mod_proxy_htmlUpgrade mod_sslUpgrade httpdUpgrade mod_sessionUpgrade httpd-manual | Jul 21, 2026 | Jul 20, 2026 |
| Alpine Linux | — | Upgrade apache2 | May 6, 2026 | May 4, 2026 |
| Amazon Linux Ami 2 | — | Upgrade httpd-develUpgrade httpd-filesystemUpgrade httpdUpgrade httpd-debuginfoUpgrade mod_sessionUpgrade mod_ldapUpgrade httpd-toolsUpgrade mod_mdUpgrade mod_proxy_htmlUpgrade mod_sslUpgrade httpd-manual | Jun 8, 2026 | Jun 8, 2026 |
| Amazon_linux_2023 | — | Upgrade httpd-core-debuginfoUpgrade mod_ldap-debuginfoUpgrade httpd-debugsourceUpgrade mod_ssl-debuginfoUpgrade httpd-manualUpgrade mod_ldapUpgrade mod_proxy_htmlUpgrade mod_session-debuginfoUpgrade httpd-toolsUpgrade httpd-coreUpgrade mod_proxy_html-debuginfoUpgrade httpd-tools-debuginfoUpgrade mod_luaUpgrade mod_sessionUpgrade mod_lua-debuginfoUpgrade httpd-filesystemUpgrade mod_sslUpgrade httpdUpgrade httpd-develUpgrade httpd-debuginfo | May 28, 2026 | May 4, 2026 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | May 5, 2026 | May 4, 2026 |
| Debian | — | Upgrade apache2 | May 7, 2026 | May 7, 2026 |
| Freebsd | — | Upgrade apache24 | May 6, 2026 | May 5, 2026 |
| Gentoo Linux | — | Upgrade www-servers/apache. | Aug 16, 2026 | Aug 13, 2026 |
| Redhat_linux | — | Upgrade httpd-manualUpgrade httpd-core-debuginfoUpgrade mod_proxy_htmlUpgrade mod_session-debuginfoUpgrade httpd-debugsourceUpgrade mod_ldap-debuginfoUpgrade httpd-develUpgrade mod_sslUpgrade httpd-filesystemUpgrade httpdUpgrade httpd-debuginfoUpgrade mod_sessionUpgrade httpd-coreNo solution existsUpgrade mod_luaUpgrade httpd-tools-debuginfoUpgrade mod_ldapUpgrade mod_ssl-debuginfoUpgrade mod_lua-debuginfoUpgrade httpd-toolsUpgrade mod_proxy_html-debuginfo | Jul 10, 2026 | May 4, 2026 |
| Rocky_linux | — | Upgrade httpd-debugsourceUpgrade mod_session-debuginfoUpgrade mod_sslUpgrade httpd-coreUpgrade mod_lua-debuginfoUpgrade mod_ldapUpgrade httpd-debuginfoUpgrade mod_ldap-debuginfoUpgrade mod_proxy_html-debuginfoUpgrade mod_sessionUpgrade httpd-toolsUpgrade httpd-develUpgrade httpd-core-debuginfoUpgrade httpd-tools-debuginfoUpgrade mod_luaUpgrade mod_ssl-debuginfoUpgrade httpdUpgrade mod_proxy_html | Jul 10, 2026 | Jul 7, 2026 |
| Ubuntu | — | Upgrade apache2-bin (Ubuntu Pro)Upgrade apache2-mpm-itk (Ubuntu Pro)Upgrade apache2-ssl-dev (Ubuntu Pro)Upgrade apache2-suexec (Ubuntu Pro)Upgrade apache2Upgrade apache2-suexec-custom (Ubuntu Pro)Upgrade apache2.2-bin (Ubuntu Pro)Upgrade apache2-dev (Ubuntu Pro)Upgrade apache2-mpm-event (Ubuntu Pro)Upgrade libapache2-mod-macro (Ubuntu Pro)Upgrade apache2-mpm-worker (Ubuntu Pro)Upgrade apache2-mpm-prefork (Ubuntu Pro)Upgrade libapache2-mod-proxy-html (Ubuntu Pro)Upgrade apache2 (Ubuntu Pro)Upgrade apache2-suexec-pristine (Ubuntu Pro)Upgrade libapache2-mod-proxy-uwsgi (Ubuntu Pro)Upgrade apache2-utils (Ubuntu Pro)Upgrade libapache2-mod-md (Ubuntu Pro) | May 7, 2026 | May 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Jun 29, 2026 | May 4, 2026 |
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