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_proxy_htmlUpgrade mod_luaUpgrade mod_http2Upgrade httpd-filesystemUpgrade httpd-develUpgrade mod_sslUpgrade mod_ldapUpgrade httpd-coreUpgrade mod_sessionUpgrade httpd-manualUpgrade httpd-toolsUpgrade mod_mdUpgrade httpd | Dec 23, 2025 | Dec 22, 2025 |
| Alpine Linux | — | Upgrade apache2 | Dec 8, 2025 | Dec 5, 2025 |
| Amazon Linux Ami 2 | — | Upgrade mod_proxy_htmlUpgrade httpd-develUpgrade httpdUpgrade httpd-toolsUpgrade mod_mdUpgrade mod_sessionUpgrade httpd-debuginfoUpgrade httpd-filesystemUpgrade httpd-manualUpgrade mod_sslUpgrade mod_ldap | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade mod_proxy_html-debuginfoUpgrade httpd-debugsourceUpgrade mod_ldap-debuginfoUpgrade mod_proxy_htmlUpgrade mod_sslUpgrade httpd-filesystemUpgrade mod_sessionUpgrade mod_session-debuginfoUpgrade mod_ldapUpgrade httpd-manualUpgrade mod_lua-debuginfoUpgrade mod_luaUpgrade httpd-core-debuginfoUpgrade httpd-tools-debuginfoUpgrade httpd-toolsUpgrade httpd-coreUpgrade httpd-debuginfoUpgrade mod_ssl-debuginfoUpgrade httpd-develUpgrade httpd | 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 httpd-filesystemUpgrade mod_sslUpgrade httpd-toolsUpgrade httpd | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade httpd-filesystemUpgrade mod_sslUpgrade httpdUpgrade httpd-tools | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp12 | — | Upgrade httpdUpgrade httpd-filesystemUpgrade mod_sslUpgrade httpd-tools | 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 mod_proxy_htmlUpgrade mod_luaUpgrade httpd-develUpgrade httpd-toolsUpgrade httpdUpgrade httpd-coreUpgrade httpd-filesystemUpgrade mod_sslUpgrade mod_http2Upgrade httpd-manualUpgrade mod_sessionUpgrade mod_ldapUpgrade mod_md | Dec 24, 2025 | Dec 5, 2025 |
| Redhat_linux | — | Upgrade httpd-filesystemUpgrade mod_md-debuginfoUpgrade mod_mdUpgrade mod_http2-debuginfoUpgrade httpd-manualUpgrade mod_proxy_htmlUpgrade mod_http2Upgrade httpd-core-debuginfoUpgrade httpd-debuginfoUpgrade mod_http2-debugsourceUpgrade mod_ldap-debuginfoUpgrade httpd-coreUpgrade mod_md-debugsourceUpgrade mod_sslNo solution existsUpgrade mod_ssl-debuginfoUpgrade httpd-develUpgrade httpdUpgrade mod_lua-debuginfoUpgrade mod_sessionUpgrade httpd-tools-debuginfoUpgrade mod_proxy_html-debuginfoUpgrade mod_session-debuginfoUpgrade httpd-debugsourceUpgrade mod_luaUpgrade httpd-toolsUpgrade mod_ldap | Dec 23, 2025 | Dec 5, 2025 |
| Rocky_linux | — | Upgrade mod_md-debuginfoUpgrade mod_mdUpgrade mod_proxy_htmlUpgrade httpdUpgrade mod_http2-debugsourceUpgrade httpd-develUpgrade mod_sslUpgrade mod_ldap-debuginfoUpgrade mod_md-debugsourceUpgrade mod_http2-debuginfoUpgrade mod_ssl-debuginfoUpgrade httpd-toolsUpgrade httpd-debuginfoUpgrade httpd-coreUpgrade httpd-tools-debuginfoUpgrade httpd-core-debuginfoUpgrade mod_sessionUpgrade mod_ldapUpgrade mod_luaUpgrade mod_lua-debuginfoUpgrade mod_http2Upgrade mod_proxy_html-debuginfoUpgrade httpd-debugsourceUpgrade mod_session-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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