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.
CVSS Details
- CVSS 3.1 Base Score: 5.4
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade mod_proxy_htmlUpgrade httpd-develUpgrade mod_http2Upgrade httpd-filesystemUpgrade mod_luaUpgrade httpd-coreUpgrade httpd-manualUpgrade mod_ldapUpgrade mod_mdUpgrade httpdUpgrade mod_sslUpgrade mod_sessionUpgrade httpd-tools | Dec 23, 2025 | Dec 22, 2025 |
| Alpine Linux | — | Upgrade apache2 | Dec 8, 2025 | Dec 5, 2025 |
| Amazon Linux Ami 2 | — | Upgrade httpdUpgrade mod_proxy_htmlUpgrade httpd-toolsUpgrade httpd-develUpgrade mod_ldapUpgrade mod_sslUpgrade httpd-filesystemUpgrade httpd-debuginfoUpgrade mod_mdUpgrade mod_sessionUpgrade httpd-manual | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade mod_proxy_html-debuginfoUpgrade mod_sessionUpgrade httpd-debugsourceUpgrade mod_session-debuginfoUpgrade httpd-filesystemUpgrade mod_ldapUpgrade mod_proxy_htmlUpgrade mod_ldap-debuginfoUpgrade mod_sslUpgrade mod_lua-debuginfoUpgrade httpd-core-debuginfoUpgrade mod_luaUpgrade httpd-manualUpgrade httpdUpgrade httpd-develUpgrade httpd-tools-debuginfoUpgrade httpd-toolsUpgrade httpd-coreUpgrade httpd-debuginfoUpgrade mod_ssl-debuginfo | 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 httpdUpgrade httpd-toolsUpgrade httpd-filesystemUpgrade mod_ssl | Mar 17, 2026 | Mar 17, 2026 |
| Huawei Euleros 2_0_sp11 | — | Upgrade mod_sslUpgrade httpd-filesystemUpgrade 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 httpd-toolsUpgrade mod_sslUpgrade httpdUpgrade 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 version 8.5.5.29 or laterApply IBM HTTP Server Interim Fix PH68462 | Mar 25, 2026 | Dec 15, 2025 |
| Oracle_linux | — | Upgrade mod_sessionUpgrade mod_mdUpgrade httpd-manualUpgrade httpd-filesystemUpgrade mod_sslUpgrade mod_http2Upgrade mod_ldapUpgrade httpd-coreUpgrade httpd-toolsUpgrade httpdUpgrade mod_proxy_htmlUpgrade httpd-develUpgrade mod_lua | Dec 24, 2025 | Dec 5, 2025 |
| Redhat_linux | — | Upgrade mod_proxy_htmlUpgrade mod_http2-debuginfoUpgrade mod_http2Upgrade mod_http2-debugsourceUpgrade mod_ldap-debuginfoUpgrade mod_mdUpgrade httpd-filesystemUpgrade mod_md-debugsourceNo solution existsUpgrade httpd-core-debuginfoUpgrade httpd-debuginfoUpgrade httpd-manualUpgrade mod_sslUpgrade mod_ssl-debuginfoUpgrade httpd-coreUpgrade httpd-develUpgrade mod_md-debuginfoUpgrade httpdUpgrade httpd-debugsourceUpgrade mod_sessionUpgrade httpd-toolsUpgrade httpd-tools-debuginfoUpgrade mod_luaUpgrade mod_session-debuginfoUpgrade mod_ldapUpgrade mod_lua-debuginfoUpgrade mod_proxy_html-debuginfo | Dec 23, 2025 | Dec 5, 2025 |
| Rocky_linux | — | Upgrade mod_mdUpgrade mod_ssl-debuginfoUpgrade httpd-toolsUpgrade mod_proxy_htmlUpgrade mod_md-debugsourceUpgrade mod_sslUpgrade httpd-develUpgrade httpdUpgrade httpd-debuginfoUpgrade mod_ldap-debuginfoUpgrade mod_http2-debuginfoUpgrade mod_http2-debugsourceUpgrade httpd-debugsourceUpgrade mod_lua-debuginfoUpgrade mod_md-debuginfoUpgrade mod_http2Upgrade mod_session-debuginfoUpgrade mod_luaUpgrade mod_ldapUpgrade mod_sessionUpgrade httpd-tools-debuginfoUpgrade httpd-core-debuginfoUpgrade httpd-coreUpgrade mod_proxy_html-debuginfo | Feb 5, 2026 | Dec 24, 2025 |
| Ubuntu | — | Upgrade apache2 (Ubuntu Pro)Upgrade apache2 | 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 |
Prioritise with Active Threat Intelligence
With curated Threat Intelligence, you can see which vulnerabilities truly put you at risk, prioritize what matters most, and act before attackers do.
Explore Intelligence Hub