Critical: kusanagi-httpd24 Security Update

Security Advisory

Synopsis

Issued 2026-06-09
Severity Critical
Updated Packages kusanagi-httpd24
Affected Products Business Edition, KUSANAGI 9, Security Edition

Description

An update for kusanagi-httpd24 is now available.

Security fix(es):

  • 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
  • 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)
  • 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
  • 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
  • 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
  • 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
  • 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
  • CVE-2026-42536: mod_xml2enc heap overflow (cve.mitre.org) Heap-based Buffer Overflow vulnerability in Apache HTTP Server with 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
  • 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 earlier 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
  • 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
  • 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
  • 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
  • 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

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.
CVE information may not yet be available on those websites.

References

Updated packages listed below

This product uses the NVD API but is not endorsed or certified by the NVD.

kusanagi-httpd24 Module Update 2.4.68-1

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