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.
CVSS Details
- CVSS 3.1 Base Score: 4.8
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade httpd-toolsUpgrade mod_luaUpgrade mod_ldapUpgrade httpd-filesystemUpgrade httpd-develUpgrade httpd-manualUpgrade httpd-coreUpgrade mod_proxy_htmlUpgrade mod_sslUpgrade mod_sessionUpgrade httpd | Jul 21, 2026 | Jul 20, 2026 |
| Alpine Linux | — | Upgrade apache2 | May 6, 2026 | May 4, 2026 |
| Amazon Linux Ami 2 | — | Upgrade httpd-debuginfoUpgrade httpd-develUpgrade httpdUpgrade httpd-filesystemUpgrade mod_ldapUpgrade mod_sessionUpgrade mod_mdUpgrade mod_proxy_htmlUpgrade httpd-manualUpgrade httpd-toolsUpgrade mod_ssl | Jun 8, 2026 | Jun 8, 2026 |
| Amazon_linux_2023 | — | Upgrade httpd-debuginfoUpgrade mod_luaUpgrade httpd-tools-debuginfoUpgrade mod_sslUpgrade httpdUpgrade mod_lua-debuginfoUpgrade mod_sessionUpgrade httpd-filesystemUpgrade httpd-develUpgrade httpd-coreUpgrade httpd-toolsUpgrade mod_ldapUpgrade mod_session-debuginfoUpgrade httpd-core-debuginfoUpgrade mod_ssl-debuginfoUpgrade httpd-debugsourceUpgrade httpd-manualUpgrade mod_proxy_html-debuginfoUpgrade mod_ldap-debuginfoUpgrade mod_proxy_html | 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 mod_ldap-debuginfoUpgrade httpdUpgrade mod_proxy_htmlUpgrade mod_sessionUpgrade httpd-filesystemUpgrade httpd-coreNo solution existsUpgrade httpd-debuginfoUpgrade mod_session-debuginfoUpgrade mod_sslUpgrade httpd-manualUpgrade httpd-develUpgrade httpd-core-debuginfoUpgrade httpd-debugsourceUpgrade httpd-toolsUpgrade mod_lua-debuginfoUpgrade httpd-tools-debuginfoUpgrade mod_ssl-debuginfoUpgrade mod_luaUpgrade mod_ldapUpgrade mod_proxy_html-debuginfo | Jul 10, 2026 | May 4, 2026 |
| Rocky_linux | — | Upgrade httpd-tools-debuginfoUpgrade httpd-develUpgrade mod_ssl-debuginfoUpgrade mod_luaUpgrade mod_proxy_htmlUpgrade httpdUpgrade httpd-toolsUpgrade httpd-core-debuginfoUpgrade httpd-coreUpgrade mod_session-debuginfoUpgrade mod_sslUpgrade mod_ldap-debuginfoUpgrade mod_sessionUpgrade mod_lua-debuginfoUpgrade mod_ldapUpgrade httpd-debuginfoUpgrade httpd-debugsourceUpgrade mod_proxy_html-debuginfo | Jul 10, 2026 | Jul 7, 2026 |
| Ubuntu | — | Upgrade apache2-utils (Ubuntu Pro)Upgrade libapache2-mod-proxy-html (Ubuntu Pro)Upgrade apache2-mpm-prefork (Ubuntu Pro)Upgrade libapache2-mod-proxy-uwsgi (Ubuntu Pro)Upgrade apache2 (Ubuntu Pro)Upgrade libapache2-mod-macro (Ubuntu Pro)Upgrade apache2-mpm-worker (Ubuntu Pro)Upgrade libapache2-mod-md (Ubuntu Pro)Upgrade apache2-dev (Ubuntu Pro)Upgrade apache2-mpm-event (Ubuntu Pro)Upgrade apache2-suexec-pristine (Ubuntu Pro)Upgrade apache2-ssl-dev (Ubuntu Pro)Upgrade apache2-mpm-itk (Ubuntu Pro)Upgrade apache2.2-bin (Ubuntu Pro)Upgrade apache2-bin (Ubuntu Pro)Upgrade apache2Upgrade apache2-suexec (Ubuntu Pro)Upgrade apache2-suexec-custom (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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