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