CVE-2026-73636
Fixed in a distro release EPSS <1%CVSS 8.1
Authentication bypass by capture-replay in mod_auth_digest in Apache Software Foundation Apache HTTP Server 2.4.x on all platforms allows a man-in-the-middle (MITM) attacker to replay captured digest authentication credentials via crafted requests that trigger garbage collection of the client's shared memory entry when AuthDigestNonceLifetime is set to 0. Users are recommended to upgrade to version 2.4.69, which fixes this issue.
Products: Apache Software Foundation Apache HTTP Server
Distro releases
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux 9 | httpd | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | httpd-core | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | httpd-devel | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | httpd-filesystem | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | httpd-manual | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | httpd-tools | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | mod_ldap | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | mod_lua | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | mod_proxy_html | 1:2.4.62-13.el9_8.9 |
| AlmaLinux 9 | mod_session | 2.4.62-13.el9_8.9 |
| AlmaLinux 9 | mod_ssl | 1:2.4.62-13.el9_8.9 |
| Alpine 3.21 | apache2 | 2.4.69-r0 |
| Alpine 3.22 | apache2 | 2.4.69-r0 |
| Alpine 3.23 | apache2 | 2.4.69-r0 |
| Alpine 3.24 | apache2 | 2.4.69-r0 |
| Debian 12 | apache2 | no fix |
| Debian 13 | apache2 | 2.4.69-1~deb13u1 |
| Debian 14 | apache2 | 2.4.69-1 |
| Red Hat hummingbird 1 | httpd | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | httpd-core | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | httpd-devel | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | httpd-filesystem | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | httpd-manual | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | httpd-tools | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | mod_ldap | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | mod_lua | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | mod_proxy_html | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | mod_session | 0:2.4.69-1.hum1 |
| Red Hat hummingbird 1 | mod_ssl | 0:2.4.69-1.hum1 |
| Rocky Linux 9 | httpd | 0:2.4.62-13.el9_8.9 |
| Ubuntu 22.04 LTS | apache2 | 2.4.52-1ubuntu4.25 |
| Ubuntu 24.04 LTS | apache2 | 2.4.58-1ubuntu8.17 |
| Ubuntu 26.04 LTS | apache2 | 2.4.66-2ubuntu2.6 |
| Ubuntu 26.10 | apache2 | no fix |
| Ubuntu Pro 14.04 LTS | apache2 | 2.4.7-1ubuntu4.22+esm17 |
| Ubuntu Pro 16.04 LTS | apache2 | 2.4.18-2ubuntu3.17+esm22 |
| Ubuntu Pro 18.04 LTS | apache2 | 2.4.29-1ubuntu4.27+esm13 |
| Ubuntu Pro 20.04 LTS | apache2 | 2.4.41-4ubuntu3.23+esm9 |