HTTP response splitting in the core of Apache HTTP Server allows an attacker who can manipulate the Content-Type response headers of applications hosted or proxied by the server can split the HTTP response.
This vulnerability was described as CVE-2023-38709 but the patch included in Apache HTTP Server 2.4.59 did not address the issue.
Users are recommended to upgrade to version 2.4.64, which fixes this issue.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade mod_ldapUpgrade mod_sslUpgrade httpd-filesystemUpgrade mod_proxy_htmlUpgrade mod_mdUpgrade mod_sessionUpgrade mod_http2Upgrade httpd-manualUpgrade httpdUpgrade httpd-coreUpgrade httpd-toolsUpgrade mod_luaUpgrade httpd-devel | Jul 21, 2026 | Jul 20, 2026 |
| Alpine Linux | — | Upgrade apache2 | Aug 8, 2025 | Jul 10, 2025 |
| Amazon Linux Ami 2 | — | Upgrade httpd-manualUpgrade mod_proxy_htmlUpgrade httpd-toolsUpgrade httpd-develUpgrade httpd-debuginfoUpgrade mod_mdUpgrade mod_ldapUpgrade httpdUpgrade httpd-filesystemUpgrade mod_sslUpgrade mod_session | May 20, 2026 | May 20, 2026 |
| Amazon_linux_2023 | — | Upgrade httpd-debuginfoUpgrade httpd-core-debuginfoUpgrade mod_ldapUpgrade mod_session-debuginfoUpgrade httpd-manualUpgrade httpdUpgrade httpd-debugsourceUpgrade mod_sessionUpgrade mod_sslUpgrade httpd-coreUpgrade mod_proxy_html-debuginfoUpgrade mod_lua-debuginfoUpgrade httpd-tools-debuginfoUpgrade mod_ssl-debuginfoUpgrade httpd-filesystemUpgrade mod_luaUpgrade mod_proxy_htmlUpgrade httpd-develUpgrade mod_ldap-debuginfoUpgrade httpd-tools | Aug 5, 2025 | Jul 14, 2025 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | Jul 18, 2025 | Jul 10, 2025 |
| Debian | — | Upgrade apache2 | Jul 14, 2025 | Jul 10, 2025 |
| F5 Big Ip | — | Update F5 BIG-IP to the latest version | Jun 17, 2026 | Aug 21, 2025 |
| Freebsd | — | Upgrade apache24 | Jul 13, 2025 | Jul 11, 2025 |
| Gentoo Linux | — | Upgrade www-servers/apache. | Aug 16, 2026 | Aug 13, 2026 |
| Huawei Euleros 2_0_sp10 | — | Upgrade httpd-filesystemUpgrade httpd-toolsUpgrade mod_sslUpgrade httpd | Nov 12, 2025 | Oct 10, 2025 |
| Huawei Euleros 2_0_sp11 | — | Upgrade httpd-filesystemUpgrade mod_sslUpgrade httpdUpgrade httpd-tools | Oct 14, 2025 | Oct 10, 2025 |
| Huawei Euleros 2_0_sp12 | — | Upgrade mod_sslUpgrade httpd-toolsUpgrade httpdUpgrade httpd-filesystem | Nov 12, 2025 | Oct 10, 2025 |
| Huawei Euleros 2_0_sp13 | — | Upgrade httpd-filesystemUpgrade mod_sslUpgrade httpdUpgrade httpd-tools | Oct 24, 2025 | Oct 10, 2025 |
| Ibm Http_server | — | Apply IBM HTTP Server Interim Fix PH67153Apply IBM HTTP Server version 9.0.5.25 or laterApply IBM HTTP Server version 8.5.5.29 or later | Mar 25, 2026 | Aug 12, 2025 |
| Oracle Httpserver | — | Apply patch 38856415 to Oracle HTTP Server 12.2.1.4.0.Apply patch 38853418 to Oracle HTTP Server 14.1.2.0.0. | Sep 30, 2026 | Jul 10, 2025 |
| Redhat_linux | — | Upgrade httpdUpgrade httpd-core-debuginfoUpgrade mod_ssl-debuginfoUpgrade mod_luaUpgrade mod_http2-debuginfoUpgrade mod_md-debugsourceNo solution existsUpgrade mod_mdUpgrade mod_proxy_htmlUpgrade httpd-develUpgrade httpd-toolsUpgrade httpd-tools-debuginfoUpgrade httpd-coreUpgrade mod_proxy_html-debuginfoUpgrade httpd-debugsourceUpgrade httpd-manualUpgrade mod_ldap-debuginfoUpgrade httpd-filesystemUpgrade mod_http2-debugsourceUpgrade mod_session-debuginfoUpgrade mod_md-debuginfoUpgrade mod_sessionUpgrade mod_ldapUpgrade mod_sslUpgrade mod_lua-debuginfoUpgrade httpd-debuginfoUpgrade mod_http2 | Jul 15, 2025 | Jul 10, 2025 |
| Rocky_linux | — | Upgrade mod_md-debugsourceUpgrade mod_sslUpgrade mod_luaUpgrade mod_http2-debuginfoUpgrade mod_lua-debuginfoUpgrade mod_md-debuginfoUpgrade mod_mdUpgrade httpd-develUpgrade mod_sessionUpgrade httpd-tools-debuginfoUpgrade httpdUpgrade httpd-debuginfoUpgrade mod_proxy_html-debuginfoUpgrade httpd-core-debuginfoUpgrade mod_ldapUpgrade mod_ldap-debuginfoUpgrade httpd-toolsUpgrade httpd-debugsourceUpgrade mod_ssl-debuginfoUpgrade mod_session-debuginfoUpgrade mod_http2Upgrade httpd-coreUpgrade mod_proxy_htmlUpgrade mod_http2-debugsource | Jul 10, 2026 | Jul 7, 2026 |
| Suse | — | Upgrade apache2Upgrade apache2-example-pagesUpgrade apache2-preforkUpgrade apache2-manualUpgrade apache2-tls13-docUpgrade apache2-develUpgrade apache2-tls13-utilsUpgrade apache2-workerUpgrade apache2-tls13Upgrade apache2-eventUpgrade apache2-tls13-example-pagesUpgrade apache2-utilsUpgrade apache2-tls13-workerUpgrade apache2-docUpgrade apache2-tls13-develUpgrade apache2-tls13-prefork | Dec 5, 2025 | Jul 31, 2025 |
| Ubuntu | — | Upgrade apache2 (Ubuntu Pro)Upgrade apache2 | Jul 17, 2025 | Jul 10, 2025 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | Aug 11, 2025 | Jul 10, 2025 |
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