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Path equivalence: '/./' (single dot directory) vulnerability in Apache HTTP Server's mod_userdir module when configured with absolute non-wildcard UserDir directive (the 2nd form in https://httpd.apache.org/docs/2.4/mod/mod_userdir.html#userdir)
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alpine Linux | — | Upgrade apache2 | Oct 5, 2026 | Oct 1, 2026 |
| Amazon Linux Ami 2 | — | Upgrade httpdUpgrade httpd-manualUpgrade mod_sslUpgrade httpd-develUpgrade mod_mdUpgrade mod_sessionUpgrade httpd-debuginfoUpgrade mod_proxy_htmlUpgrade httpd-filesystemUpgrade mod_http2Upgrade mod_ldapUpgrade httpd-tools | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade httpd-coreUpgrade mod_luaUpgrade httpd-toolsUpgrade mod_proxy_html-debuginfoUpgrade httpd-debuginfoUpgrade httpd-debugsourceUpgrade httpdUpgrade httpd-tools-debuginfoUpgrade mod_lua-debuginfoUpgrade mod_sessionUpgrade httpd-manualUpgrade mod_ldapUpgrade httpd-filesystemUpgrade httpd-core-debuginfoUpgrade mod_ssl-debuginfoUpgrade mod_http2-debuginfoUpgrade mod_ldap-debuginfoUpgrade httpd-develUpgrade mod_sslUpgrade mod_proxy_htmlUpgrade mod_http2Upgrade mod_session-debuginfo | Oct 13, 2026 | Oct 1, 2026 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | Oct 2, 2026 | Oct 1, 2026 |
| Debian | — | Upgrade apache2 | Oct 20, 2026 | Oct 1, 2026 |
| Freebsd | — | Upgrade apache24 | Oct 5, 2026 | Oct 1, 2026 |
| Redhat_linux | — | No solution exists | Oct 5, 2026 | Oct 1, 2026 |
| Ubuntu | — | Upgrade apache2-ssl-devUpgrade libapache2-mod-proxy-uwsgiUpgrade apache2.2-bin (Ubuntu Pro)Upgrade apache2-mpm-prefork (Ubuntu Pro)Upgrade libapache2-mod-macro (Ubuntu Pro)Upgrade apache2Upgrade apache2-devUpgrade apache2-mpm-event (Ubuntu Pro)Upgrade apache2-suexec-pristine (Ubuntu Pro)Upgrade libapache2-mod-mdUpgrade apache2 (Ubuntu Pro)Upgrade apache2-suexec-customUpgrade libapache2-mod-proxy-html (Ubuntu Pro)Upgrade apache2-utilsUpgrade apache2-utils (Ubuntu Pro)Upgrade apache2-ssl-dev (Ubuntu Pro)Upgrade apache2-mpm-worker (Ubuntu Pro)Upgrade apache2-suexec-pristineUpgrade apache2-bin (Ubuntu Pro)Upgrade libapache2-mod-proxy-uwsgi (Ubuntu Pro)Upgrade apache2-mpm-itk (Ubuntu Pro)Upgrade apache2-dev (Ubuntu Pro)Upgrade apache2-binUpgrade libapache2-mod-md (Ubuntu Pro)Upgrade apache2-suexec (Ubuntu Pro)Upgrade apache2-suexec-custom (Ubuntu Pro) | Oct 15, 2026 | Oct 14, 2026 |
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