mod_userdir+suexec bypass via AllowOverride FileInfo vulnerability in Apache HTTP Server. Users with access to use the RequestHeader directive in htaccess can cause some CGI scripts to run under an unexpected userid.
This issue affects Apache HTTP Server: from 2.4.7 through 2.4.65.
Users are recommended to upgrade to version 2.4.66, which fixes the issue.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade mod_sslUpgrade httpd-manualUpgrade mod_sessionUpgrade httpd-toolsUpgrade mod_ldapUpgrade mod_mdUpgrade httpd-coreUpgrade httpdUpgrade mod_http2Upgrade httpd-filesystemUpgrade httpd-develUpgrade mod_proxy_htmlUpgrade mod_lua | Dec 23, 2025 | Dec 22, 2025 |
| Alpine Linux | — | Upgrade apache2 | Dec 8, 2025 | Dec 5, 2025 |
| Amazon Linux Ami 2 | — | Upgrade mod_ldapUpgrade mod_sslUpgrade httpd-filesystemUpgrade mod_mdUpgrade httpd-debuginfoUpgrade httpd-manualUpgrade mod_sessionUpgrade httpd-develUpgrade httpdUpgrade httpd-toolsUpgrade mod_proxy_html | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade httpd-filesystemUpgrade mod_proxy_html-debuginfoUpgrade mod_ldapUpgrade mod_session-debuginfoUpgrade mod_sslUpgrade mod_sessionUpgrade mod_proxy_htmlUpgrade mod_ldap-debuginfoUpgrade httpd-debugsourceUpgrade mod_ssl-debuginfoUpgrade httpd-debuginfoUpgrade httpd-coreUpgrade httpd-tools-debuginfoUpgrade httpd-core-debuginfoUpgrade mod_lua-debuginfoUpgrade httpd-develUpgrade mod_luaUpgrade httpdUpgrade httpd-manualUpgrade httpd-tools | Jan 12, 2026 | Dec 5, 2025 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | Dec 8, 2025 | Dec 5, 2025 |
| Apple Osx Apache | — | Upgrade macOS to the latest version | Mar 27, 2026 | Mar 24, 2026 |
| Debian | — | Upgrade apache2 | Jan 12, 2026 | Jan 12, 2026 |
| Freebsd | — | Upgrade apache24 | Dec 10, 2025 | Dec 4, 2025 |
| Gentoo Linux | — | Upgrade www-servers/apache. | Aug 16, 2026 | Aug 13, 2026 |
| Huawei Euleros 2_0_sp10 | — | Upgrade mod_sslUpgrade httpd-filesystemUpgrade httpd-toolsUpgrade httpd | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade httpd-toolsUpgrade httpd-filesystemUpgrade httpdUpgrade mod_ssl | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp12 | — | Upgrade mod_sslUpgrade httpd-toolsUpgrade httpdUpgrade httpd-filesystem | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp13 | — | Upgrade httpdUpgrade httpd-toolsUpgrade mod_sslUpgrade httpd-filesystem | Mar 10, 2026 | Mar 10, 2026 |
| Ibm Http_server | — | Apply IBM HTTP Server version 9.0.5.27 or laterApply IBM HTTP Server Interim Fix PH68462Apply IBM HTTP Server version 8.5.5.29 or later | Mar 25, 2026 | Dec 15, 2025 |
| Oracle_linux | — | Upgrade httpd-toolsUpgrade httpd-develUpgrade mod_luaUpgrade httpdUpgrade mod_proxy_htmlUpgrade mod_sslUpgrade httpd-manualUpgrade httpd-coreUpgrade mod_ldapUpgrade mod_http2Upgrade mod_mdUpgrade httpd-filesystemUpgrade mod_session | Dec 24, 2025 | Dec 5, 2025 |
| Redhat_linux | — | Upgrade httpd-toolsUpgrade mod_ldapUpgrade httpdUpgrade mod_proxy_html-debuginfoUpgrade mod_luaUpgrade mod_sessionUpgrade httpd-tools-debuginfoUpgrade mod_session-debuginfoUpgrade mod_lua-debuginfoUpgrade httpd-debugsourceUpgrade httpd-debuginfoUpgrade mod_mdUpgrade httpd-develUpgrade httpd-coreUpgrade mod_md-debuginfoUpgrade mod_http2-debuginfoUpgrade mod_proxy_htmlUpgrade httpd-filesystemUpgrade mod_http2Upgrade mod_md-debugsourceUpgrade httpd-core-debuginfoUpgrade httpd-manualUpgrade mod_sslUpgrade mod_http2-debugsourceUpgrade mod_ldap-debuginfoNo solution existsUpgrade mod_ssl-debuginfo | Dec 23, 2025 | Dec 5, 2025 |
| Rocky_linux | — | Upgrade mod_proxy_htmlUpgrade mod_md-debugsourceUpgrade mod_http2-debuginfoUpgrade mod_ldap-debuginfoUpgrade mod_ssl-debuginfoUpgrade httpdUpgrade httpd-toolsUpgrade mod_sslUpgrade httpd-develUpgrade mod_mdUpgrade mod_http2-debugsourceUpgrade httpd-debuginfoUpgrade httpd-tools-debuginfoUpgrade httpd-debugsourceUpgrade httpd-coreUpgrade httpd-core-debuginfoUpgrade mod_md-debuginfoUpgrade mod_sessionUpgrade mod_ldapUpgrade mod_luaUpgrade mod_http2Upgrade mod_session-debuginfoUpgrade mod_proxy_html-debuginfoUpgrade mod_lua-debuginfo | Feb 5, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade apache2Upgrade apache2 (Ubuntu Pro) | Jan 20, 2026 | Dec 5, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Feb 9, 2026 | Dec 5, 2025 |
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