Apache httpd 2.4.68 RPMs released and added to all supported platforms.
Major changes:
*) SECURITY: CVE-2026-49975: mod_http2 denial of service
(cve.mitre.org)
Memory Allocation with Excessive Size Value vulnerability in
Apache HTTP Server's mod_http leads to denial of service via
malicious HTTP requests.
This issue affects Apache HTTP Server: from 2.4.17 through
2.4.67.
Credits: Quang Luong of Calif.IO in collaboration with OpenAI
Codex
*) SECURITY: CVE-2026-48913: mod_http2 memory corruption when file
handles exhausted (cve.mitre.org)
Use After Free vulnerability in Apache HTTP Server module
mod_http2 when file handles are already exhausted.
This issue affects Apache HTTP Server: from 2.4.55 through
2.4.67.
Credits: Sam Lovejoy, IBM X-Force Offensive Research (XOR)
*) SECURITY: CVE-2026-44631: Heap Underflow in `ap_regname` via
Signed Char Overflow (cve.mitre.org)
Buffer Underwrite vulnerability in Apache HTTP Server on crafted
regular expressions in the configuration.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes
the issue.
Credits: Zhenpeng (Leo) Lin at depthfirst
*) SECURITY: CVE-2026-44186: Loop in `proxy_ftp_handler` in
mod_proxy_ftp (cve.mitre.org)
Loop with Unreachable Exit Condition ('Infinite Loop')
vulnerability in the mod_proxy_ftp module in Apache HTTP Server
with an attacker controlled backend FTP server.
This issue affects undefined: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes
the issue.
Credits: Zhenpeng (Leo) Lin at depthfirst
*) SECURITY: CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP
`send_request` (cve.mitre.org)
Buffer Over-read vulnerability in Apache HTTP Server via
outbound OCSP requests to an attacker controlled OCSP server
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes
the issue.
Credits: Zhenpeng (Leo) Lin at depthfirst
*) SECURITY: CVE-2026-44119: escalation of privilege through
expressions in .htaccess in multiple modules (cve.mitre.org)
Improper Privilege Management vulnerability in Apache HTTP
Server 2.4.67 and earlier allows local .htaccess authors to read
files with the privileges of the httpd user.
This issue affects Apache HTTP Server: from through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes
the issue.
Credits: Lucian Nitescu
*) SECURITY: CVE-2026-43951: OOB Read in `merge_response_headers`
can cause crash (cve.mitre.org)
Out-of-bounds Read vulnerability in Apache HTTP Server with
mod_headers and mod_mime and multiple response languages.
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Credits: Zhenpeng (Leo) Lin at depthfirst
*) SECURITY: CVE-2026-42536: mod_xml2enc heap overflow
(cve.mitre.org)
Heap-based Buffer Overflow vulnerability in Apache HTTP Server
withВ mod_xml2enc, xml2StartParse, and untrusted content
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes
the issue.
Credits: Zhenpeng (Leo) Lin at depthfirst
*) SECURITY: CVE-2026-42535: mod_dav_fs protected directory access
(cve.mitre.org)
A path handling issue in mod_dav_fs in Apache 2.4.67 and
earlierВ allows a WebDAV content author to directly manipulate
trusted DAV property databases, potentially causing child
process crashes.
Users are recommended to upgrade to version 2.4.68, which fixes
this issue.
Credits: Zhenpeng (Leo) Lin at depthfirst
*) SECURITY: CVE-2026-34356: ProxyPassReverseCookieMap buffer
overflow (cve.mitre.org)
Heap-based Buffer Overflow vulnerability in Apache HTTP Server
with malicious backend servers and ProxyPassReverseCookie*
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes
the issue.
Credits: Arkadi Vainbrand
*) SECURITY: CVE-2026-34355: mod_proxy_html buffer overflow
(cve.mitre.org)
A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67
and earlier allows an attack by an untrusted backend.
Users are recommended to upgrade to version 2.4.68, which fixes
this issue.
Credits: Elhanan Haenel
*) SECURITY: CVE-2026-29170: mod_proxy_ftp XSS (cve.mitre.org)
A cross-site scripting vulnerability exists in mod_proxy_ftp's
HTML directory list generation in Apache HTTP Server 2.4.67 and
earlier when listing FTP directory contents either via forward
or reverse proxy configuration.
Users are recommended to upgrade to version 2.4.68, which fixes
this issue.
Credits: Pavel Kohout, Aisle Research, Aisle.com
*) SECURITY: CVE-2026-29167: mod_ldap per-dir use-after-free
(cve.mitre.org)
Use After Free vulnerability in Apache HTTP Server with mod_ldap
in per-directory configuration
This issue affects Apache HTTP Server: from 2.4.0 through 2.4.67.
Users are recommended to upgrade to version 2.4.68, which fixes
the issue.
Credits: Pavel Kohout, Aisle Research, Aisle.com
*) mod_ssl, ab: Add support for OpenSSL 4.0. [Joe Orton]
*) mod_ssl: Add SerialNumber as a recognized attribute type for SSL
distinguished name variables. [Michael Osipov <michaelo apache.org>,
Benjamin Demarteau <benjamin.demarteau liege.be>]
*) mod_ssl: Set auth type to "ClientCert" when client certificate authentication
has been performed. [Michael Osipov <michaelo apache.org>]
*) mod_include: Don't print any of if/elsif/else content when
a conditional evaluation returns an error. [Eric Covener]
*) mod_unixd: CoreDumpDirectory requires enabling tracing on FreeBSD 11+.
PR 65819. [David CARLIER <devnexen gmail.com>]
*) mod_file_cache: Fix crashes for mmap'ed files under threaded
MPMs. PR 69901. barr.israel <barr.israel campus.technion.ac.il>
*) core: Add support for %{m}t in ErrorLogFormat to log milli-second
time resolution (in addition to existing %{u}t for micro-seconds).
[LuboЕЎ Uhliarik <luhliari redhat.com>]
*) mod_unixd: Drop test that effective user ID is zero in
a chroot configuration. PR 69767.
[Bastien Roucaries <rouca debian.org>]
*) mod_proxy_balancer: Include nonce in XML output. PR 63074.
Federico Mennite <federico.mennite lifeware.ch>
*) mod_http2: update to version 2.0.42
Fix excessive file description use for non-TLS frontend connections when
sending files. Fixes <https://github.com/icing/mod_h2/issues/325>
[Stefan Eissing]
*) mod_http2: update to version 2.0.41
Fix cookie header accounting against LimitRequestFields.
[Stefan Eissing]
*) mod_http2: update to version 2.0.40
Fix error handling on upload requests when server runs out of file
handles that left beam bucket callbacks in place, potentially using
no longer valid references. Only applies on platforms with pipes
and file descriptor limits not healthy for a network server.
[Stefan Eissing]
*) mod_dav_fs: Return a 404 for DELETE if deletion fails because the
resource no longer exists. PR 60746. [Joe Orton]
*) mod_proxy_hcheck: Fix healthcheck disabled due to child restart while
updating. [Yann Ylavic]
Fixed vulnerabilities:
— SECURITY: CVE-2026-49975: mod_http2 denial of service — SECURITY: CVE-2026-48913: mod_http2 memory corruption when file — SECURITY: CVE-2026-44631: Heap Underflow in `ap_regname` via — SECURITY: CVE-2026-44186: Loop in `proxy_ftp_handler` in — SECURITY: CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP — SECURITY: CVE-2026-44119: escalation of privilege through — SECURITY: CVE-2026-43951: OOB Read in `merge_response_headers` — SECURITY: CVE-2026-42536: mod_xml2enc heap overflow — SECURITY: CVE-2026-42535: mod_dav_fs protected directory access — SECURITY: CVE-2026-34356: ProxyPassReverseCookieMap buffer — SECURITY: CVE-2026-34355: mod_proxy_html buffer overflow — SECURITY: CVE-2026-29170: mod_proxy_ftp XSS (cve.mitre.org) — SECURITY: CVE-2026-29167: mod_ldap per-dir use-after-free