Summary
The httpd packages provide the Apache HTTP Server, a powerful, efficient, and extensible web server.
Security Fix(es):
* httpd: httpd: HTTP response smuggling via crafted Transfer-Encoding response in mod_proxy_uwsgi (CVE-2026-63718)
* httpd: httpd: Denial of Service via integer overflow in mod_dav_fs (CVE-2026-93546)
* httpd: httpd: Authentication state corruption via concurrent Digest authentication requests (CVE-2026-73637)
* httpd: httpd: unauthorized connection to arbitrary hosts via crafted FTP PASV response (CVE-2026-63045)
* httpd: httpd: Arbitrary code execution via oversized Host header in mod_vhost_alias (CVE-2026-63292)
* httpd: httpd: mod_heartmonitor: Denial of Service via NULL pointer dereference (CVE-2026-46729)
* httpd: httpd: Authentication bypass via credential replay in mod_auth_digest (CVE-2026-73636)
* httpd: httpd: Denial of Service via charset conversion failure in mod_xml2enc (CVE-2026-63686)
* httpd: httpd: Denial of service via forged Authorization headers in mod_auth_digest (CVE-2026-48005)
* httpd: httpd: Denial of Service via mod_rewrite lookahead (CVE-2026-56154)
* httpd: httpd: Denial of Service via heap-based buffer overflow in mod_charset_lite (CVE-2026-56153)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 11
| 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 |
Vulnerabilities 11
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Critical 9.8
Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}
Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...}) This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
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High 8.8
Apache HTTP Server: mod_dav_fs namespace overflow
Integer overflow in mod_dav_fs in Apache HTTP Server through 2.4.68 allows an authenticated WebDAV client with write access to crash worker processes and persistently corrupt a directory's property database via PROPPATCH requests declaring many XML namespaces.
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High 8.1
Apache HTTP Server: mod_auth_digest one-time-nonce replay attack
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 trigge…
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High 7.5
Apache HTTP Server: mod_heartmonitor denial of service
NULL Pointer Dereference vulnerability in Apache HTTP Servers mod_heartmonitor over unicast listener. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
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High 7.5
Apache HTTP Server: mod_auth_digest reauthentication attack
Missing authentication checks in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause a denial of service (forced re-authentication) via forged Authorization headers w…
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High 7.5
Apache HTTP Server: mod_charset_lite: Heap overflow in finish_partial_char
Out-of-bounds Write vulnerability in Apache HTTP Server's mod_charset_lite. This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.
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High 7.5
Apache HTTP Server: mod_proxy_ftp PASV address handling
Improper validation of FTP PASV reply address in mod_proxy_ftp in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows, in forward proxy configurations, an untrusted FTP server to cause the proxy to open a data connection to an…
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High 7.5CVE-2026-63292 Public exploit
Apache HTTP Server: mod_vhost_alias stack overflow
Stack-based buffer overflow in mod_vhost_alias in Apache Software Foundation Apache HTTP Server through 2.4.68 on all platforms allows a remote client to cause a denial of service or potentially execute arbitrary code via an HTTP request with a Host header ex…
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High 7.5CVE-2026-63686 Public exploit
Apache HTTP Server: mod_xml2enc crash on charset conversion failure
A NULL pointer dereference in mod_xml2enc in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an untrusted backend server to cause a denial of service via a proxied response with a charset whose conversion partially succeeds…
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High 7.5
Apache HTTP Server: mod_proxy_uwsgi Transfer-Encoding response smuggling
Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling') response smuggling vulnerability in Apache HTTP Server via mod_proxy_uwsgi and a crafted uwsgi response with Transfer-Encoding. This issue affects Apache HTTP Server: from 2.4.30…
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High 7.3
Apache HTTP Server: mod_auth_digest DoS attack
Use after free in mod_auth_digest in Apache Software Foundation Apache HTTP Server before 2.4.69 on all platforms allows an unauthenticated remote client to cause authentication state corruption via concurrent Digest authentication requests when AuthDigestNcC…
References
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report
https://access.redhat.com/security/cve/CVE-2026-46729
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report
https://access.redhat.com/security/cve/CVE-2026-48005
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report
https://access.redhat.com/security/cve/CVE-2026-56153
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report
https://access.redhat.com/security/cve/CVE-2026-56154
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report
https://access.redhat.com/security/cve/CVE-2026-63045
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report
https://access.redhat.com/security/cve/CVE-2026-63292
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report
https://access.redhat.com/security/cve/CVE-2026-63686
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report
https://access.redhat.com/security/cve/CVE-2026-63718
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report
https://access.redhat.com/security/cve/CVE-2026-73636
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report
https://access.redhat.com/security/cve/CVE-2026-73637
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report
https://access.redhat.com/security/cve/CVE-2026-93546
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report
https://bugzilla.redhat.com/2544781
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report
https://bugzilla.redhat.com/2544798
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report
https://bugzilla.redhat.com/2544814
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report
https://bugzilla.redhat.com/2544823
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report
https://bugzilla.redhat.com/2544832
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report
https://bugzilla.redhat.com/2544835
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report
https://bugzilla.redhat.com/2544849
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report
https://bugzilla.redhat.com/2544852
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report
https://bugzilla.redhat.com/2544861
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report
https://bugzilla.redhat.com/2544869
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report
https://bugzilla.redhat.com/2544885
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advisory
https://errata.almalinux.org/9/ALSA-2026-88229.html