Allocation of Resources Without Limits or Throttling vulnerability in Apache HTTP Server's mod_md via OCSP response data.
This issue affects Apache HTTP Server: from 2.4.30 through 2.4.66.
Users are recommended to upgrade to version 2.4.67, which fixes the issue.
CVSS Details
- CVSS 3.1 Base Score: 7.3
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Alma_linux | — | Upgrade mod_md | Jul 1, 2026 | Jun 29, 2026 |
| Alpine Linux | — | Upgrade apache2 | May 6, 2026 | May 5, 2026 |
| Amazon Linux Ami 2 | — | Upgrade httpdUpgrade httpd-filesystemUpgrade httpd-develUpgrade mod_sessionUpgrade mod_sslUpgrade mod_mdUpgrade httpd-debuginfoUpgrade httpd-manualUpgrade mod_proxy_htmlUpgrade mod_ldapUpgrade httpd-tools | Jun 8, 2026 | Jun 8, 2026 |
| Amazon_linux_2023 | — | Upgrade mod_ssl-debuginfoUpgrade httpd-core-debuginfoUpgrade httpd-toolsUpgrade httpd-manualUpgrade httpdUpgrade mod_lua-debuginfoUpgrade httpd-coreUpgrade httpd-develUpgrade httpd-tools-debuginfoUpgrade httpd-debugsourceUpgrade mod_ldapUpgrade mod_sessionUpgrade httpd-debuginfoUpgrade mod_proxy_html-debuginfoUpgrade mod_session-debuginfoUpgrade mod_ldap-debuginfoUpgrade httpd-filesystemUpgrade mod_proxy_htmlUpgrade mod_sslUpgrade mod_lua | May 28, 2026 | May 5, 2026 |
| Apache Httpd | — | Upgrade to the latest version of Apache HTTPD | May 6, 2026 | May 5, 2026 |
| Debian | — | Upgrade apache2 | May 7, 2026 | May 7, 2026 |
| Freebsd | — | Upgrade apache24 | May 6, 2026 | May 5, 2026 |
| Gentoo Linux | — | Upgrade www-servers/apache. | Aug 16, 2026 | Aug 13, 2026 |
| Redhat_linux | — | Upgrade mod_md-debuginfoUpgrade mod_mdUpgrade mod_md-debugsource | Jul 1, 2026 | May 5, 2026 |
| Rocky_linux | — | Upgrade mod_md-debugsourceUpgrade mod_mdUpgrade mod_md-debuginfo | Jul 3, 2026 | Jul 1, 2026 |
| Ubuntu | — | Upgrade apache2 | May 7, 2026 | May 6, 2026 |
| Vmware Photon_os | — | Use 'tdnf update' to upgrade all packages to the latest version. | May 27, 2026 | May 5, 2026 |
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