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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 mod_sessionUpgrade httpd-debuginfoUpgrade mod_sslUpgrade mod_mdUpgrade httpd-manualUpgrade mod_proxy_htmlUpgrade httpd-develUpgrade httpd-toolsUpgrade httpd-filesystemUpgrade mod_ldapUpgrade mod_http2 | Oct 19, 2026 | Oct 19, 2026 |
| Amazon_linux_2023 | — | Upgrade mod_sslUpgrade mod_proxy_htmlUpgrade httpd-develUpgrade mod_ssl-debuginfoUpgrade httpd-filesystemUpgrade mod_session-debuginfoUpgrade httpd-core-debuginfoUpgrade mod_ldap-debuginfoUpgrade mod_http2Upgrade mod_http2-debuginfoUpgrade httpd-toolsUpgrade mod_lua-debuginfoUpgrade httpd-manualUpgrade httpd-coreUpgrade httpdUpgrade mod_luaUpgrade mod_sessionUpgrade mod_ldapUpgrade httpd-debugsourceUpgrade httpd-debuginfoUpgrade mod_proxy_html-debuginfoUpgrade httpd-tools-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-mpm-event (Ubuntu Pro)Upgrade apache2 (Ubuntu Pro)Upgrade apache2-suexec-customUpgrade apache2Upgrade apache2-ssl-devUpgrade libapache2-mod-proxy-uwsgiUpgrade libapache2-mod-proxy-html (Ubuntu Pro)Upgrade apache2-suexec-pristine (Ubuntu Pro)Upgrade apache2.2-bin (Ubuntu Pro)Upgrade apache2-utilsUpgrade apache2-utils (Ubuntu Pro)Upgrade apache2-mpm-prefork (Ubuntu Pro)Upgrade libapache2-mod-mdUpgrade libapache2-mod-macro (Ubuntu Pro)Upgrade apache2-devUpgrade libapache2-mod-proxy-uwsgi (Ubuntu Pro)Upgrade apache2-ssl-dev (Ubuntu Pro)Upgrade apache2-mpm-worker (Ubuntu Pro)Upgrade apache2-suexec-custom (Ubuntu Pro)Upgrade apache2-dev (Ubuntu Pro)Upgrade apache2-mpm-itk (Ubuntu Pro)Upgrade apache2-bin (Ubuntu Pro)Upgrade apache2-binUpgrade libapache2-mod-md (Ubuntu Pro)Upgrade apache2-suexec (Ubuntu Pro)Upgrade apache2-suexec-pristine | Oct 15, 2026 | Oct 14, 2026 |
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