openSUSE-SU-2026:21235-1: important: Security update for apache2

openSUSE security update: security update for apache2
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Announcement ID: openSUSE-SU-2026:21235-1
Rating: important
References:

  * bsc#1267503
  * bsc#1267955
  * bsc#1267956
  * bsc#1267962
  * bsc#1267963
  * bsc#1267965
  * bsc#1267969
  * bsc#1267970
  * bsc#1267971
  * bsc#1267972
  * bsc#1267976
  * bsc#1267977
  * bsc#1267978



Cross-References:

  * CVE-2026-29167
  * CVE-2026-29170
  * CVE-2026-34355
  * CVE-2026-34356
  * CVE-2026-42535
  * CVE-2026-42536
  * CVE-2026-43951
  * CVE-2026-44119
  * CVE-2026-44185
  * CVE-2026-44186
  * CVE-2026-44631
  * CVE-2026-48913
  * CVE-2026-49975



CVSS scores:

  * CVE-2026-29167 ( SUSE ): 5.3 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-29170 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N
  * CVE-2026-34355 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-34356 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-34356 ( SUSE ): 5.9 CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-42535 ( SUSE ): 5.5 CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-42535 ( SUSE ): 7 CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-42536 ( SUSE ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-42536 ( SUSE ): 5.1 CVSS:4.0/AV:L/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-43951 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-43951 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-44119 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N
  * CVE-2026-44119 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-44185 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-44185 ( SUSE ): 6.9 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-44186 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H
  * CVE-2026-44186 ( SUSE ): 7.1 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-44631 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:U/C:N/I:H/A:H
  * CVE-2026-44631 ( SUSE ): 5.9 CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:N/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-48913 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-48913 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-49975 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-49975 ( SUSE ): 9.2 CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:H

Affected Products:

         openSUSE Leap 16.0

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An update that solves 13 vulnerabilities and has 13 bug fixes can now be installed.

Description:

This update for apache2 fixes the following issues

- CVE-2026-29167: mod_ldap per-dir use-after-free (bsc#1267976).
- CVE-2026-29170: mod_proxy_ftp XSS (bsc#1267977).
- CVE-2026-34355: mod_proxy_html buffer overflow (bsc#1267978).
- CVE-2026-34356: malicious backend servers can lead to a heap-based buffer overflow (bsc#1267955).
- CVE-2026-42535: malicious path manipulation can lead to child process crashes (bsc#1267956).
- CVE-2026-42536: processing untrusted content can lead to a heap-based buffer overflow (bsc#1267962).
- CVE-2026-43951: out-of-bound read in `merge_response_headers` can cause crash (bsc#1267963).
- CVE-2026-44119: improper privilege management can lead to an unauthorized read (bsc#1267965).
- CVE-2026-44185: Stack Buffer Over-Read in mod_ssl OCSP `send_request` (bsc#1267969).
- CVE-2026-44186: responses from an attacker-controlled FTP backend can lead to resource exhaustion and a denial of
  service (bsc#1267970).
- CVE-2026-44631: crafted regular expression can lead to a buffer underwrite (bsc#1267971).
- CVE-2026-48913: file handle exhaustion during request processing in mod_http2 can lead to a use-after-free
  (bsc#1267972).
- CVE-2026-49975: Fix cookie header accounting against LimitRequestFields (bsc#1267503).


Patch instructions:

   To install this openSUSE security update use the suse recommended installation methods
   like YaST online_update or "zypper patch".
   Alternatively you can run the command listed for your product:

- openSUSE Leap 16.0

   zypper in -t patch openSUSE-Leap-16.0-1149=1

Package List:

- openSUSE Leap 16.0:

  apache2-2.4.66-160000.3.1
  apache2-devel-2.4.66-160000.3.1
  apache2-event-2.4.66-160000.3.1
  apache2-manual-2.4.66-160000.3.1
  apache2-prefork-2.4.66-160000.3.1
  apache2-utils-2.4.66-160000.3.1
  apache2-worker-2.4.66-160000.3.1

References:

  * https://www.suse.com/security/cve/CVE-2026-29167.html
  * https://www.suse.com/security/cve/CVE-2026-29170.html
  * https://www.suse.com/security/cve/CVE-2026-34355.html
  * https://www.suse.com/security/cve/CVE-2026-34356.html
  * https://www.suse.com/security/cve/CVE-2026-42535.html
  * https://www.suse.com/security/cve/CVE-2026-42536.html
  * https://www.suse.com/security/cve/CVE-2026-43951.html
  * https://www.suse.com/security/cve/CVE-2026-44119.html
  * https://www.suse.com/security/cve/CVE-2026-44185.html
  * https://www.suse.com/security/cve/CVE-2026-44186.html
  * https://www.suse.com/security/cve/CVE-2026-44631.html
  * https://www.suse.com/security/cve/CVE-2026-48913.html
  * https://www.suse.com/security/cve/CVE-2026-49975.html