SUSE-SU-2026:2104-1: important: Security update for apache2

SLE-UPDATES null at suse.de
Thu May 28 20:30:26 UTC 2026 

# Security update for apache2

Announcement ID: SUSE-SU-2026:2104-1  
Release Date: 2026-05-28T14:03:06Z  
Rating: important  
References:

  * bsc#1263935
  * bsc#1263950
  * bsc#1263951
  * bsc#1263952
  * bsc#1263953
  * bsc#1263954
  * bsc#1263955
  * bsc#1263956
  * bsc#1263957
  * bsc#1264150
  * bsc#1264163

  
Cross-References:

  * CVE-2026-23918
  * CVE-2026-24072
  * CVE-2026-28780
  * CVE-2026-29168
  * CVE-2026-29169
  * CVE-2026-33006
  * CVE-2026-33007
  * CVE-2026-33523
  * CVE-2026-33857
  * CVE-2026-34032
  * CVE-2026-34059

  
CVSS scores:

  * CVE-2026-23918 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-23918 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-23918 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-24072 ( SUSE ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-24072 ( NVD ):  8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-28780 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-28780 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:H
  * CVE-2026-28780 ( NVD ):  9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-29168 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-29168 ( SUSE ):  5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-29168 ( NVD ):  7.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-29169 ( SUSE ):  8.2
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-29169 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-29169 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-33006 ( SUSE ):  9.1
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-33006 ( SUSE ):  7.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2026-33006 ( NVD ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-33007 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-33007 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33007 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L
  * CVE-2026-33523 ( SUSE ):  9.0
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:H/SI:H/SA:N
  * CVE-2026-33523 ( SUSE ):  8.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:H/A:N
  * CVE-2026-33523 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2026-33857 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-33857 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-33857 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-34032 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-34032 ( SUSE ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-34032 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  * CVE-2026-34059 ( SUSE ):  8.8
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-34059 ( SUSE ):  8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:H
  * CVE-2026-34059 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

  
Affected Products:

  * Basesystem Module 15-SP7
  * Server Applications Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise Real Time 15 SP7
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7
  * SUSE Package Hub 15 15-SP7

  
  
An update that solves 11 vulnerabilities can now be installed.

## Description:

This update for apache2 fixes the following issues

  * CVE-2026-23918: http2: double free and possible RCE on early reset
    (bsc#1263957).
  * CVE-2026-24072: mod_rewrite elevation of privileges via ap_expr
    (bsc#1263935).
  * CVE-2026-28780: heap buffer overflow in `mod_proxy_ajp` via
    `ajp_msg_check_header()` (bsc#1264163).
  * CVE-2026-29168: allocation of resources without limits in `mod_md` via OCSP
    response (bsc#1264150).
  * CVE-2026-29169: NULL pointer dereference in `mod_dav_lock` allows server
    crash via malicious requests (bsc#1263956).
  * CVE-2026-33006: `mod_auth_digest` timing attack allows bypass of Digest
    authentication (bsc#1263955).
  * CVE-2026-33007: NULL pointer dereference in `mod_authn_socache` allows
    unauthenticated remote user to crash a child processes (bsc#1263954).
  * CVE-2026-33523: HTTP response splitting forwarding malicious status line
    (bsc#1263953).
  * CVE-2026-33857: off-by-one OOB reads in AJP getter functions (bsc#1263952).
  * CVE-2026-34032: heap buffer overread in `mod_proxy_ajp` due to missing null-
    termination check (bsc#1263951).
  * CVE-2026-34059: heap buffer overread and memory disclosure via
    `ajp_parse_data()` (bsc#1263950).

## Patch Instructions:

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

  * SUSE Package Hub 15 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Packagehub-Subpackages-15-SP7-2026-2104=1

  * Server Applications Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-2104=1

  * Basesystem Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-2104=1

## Package List:

  * SUSE Package Hub 15 15-SP7 (aarch64 ppc64le s390x x86_64)
    * apache2-event-2.4.66-150700.4.20.1
    * apache2-event-debugsource-2.4.66-150700.4.20.1
    * apache2-event-debuginfo-2.4.66-150700.4.20.1
  * Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * apache2-utils-debugsource-2.4.66-150700.4.20.1
    * apache2-utils-debuginfo-2.4.66-150700.4.20.1
    * apache2-devel-2.4.66-150700.4.20.1
    * apache2-worker-2.4.66-150700.4.20.1
    * apache2-worker-debugsource-2.4.66-150700.4.20.1
    * apache2-utils-2.4.66-150700.4.20.1
    * apache2-worker-debuginfo-2.4.66-150700.4.20.1
  * Server Applications Module 15-SP7 (noarch)
    * apache2-manual-2.4.66-150700.4.20.1
  * Basesystem Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * apache2-2.4.66-150700.4.20.1
    * apache2-debuginfo-2.4.66-150700.4.20.1
    * apache2-prefork-debugsource-2.4.66-150700.4.20.1
    * apache2-debugsource-2.4.66-150700.4.20.1
    * apache2-prefork-debuginfo-2.4.66-150700.4.20.1
    * apache2-prefork-2.4.66-150700.4.20.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-23918.html
  * https://www.suse.com/security/cve/CVE-2026-24072.html
  * https://www.suse.com/security/cve/CVE-2026-28780.html
  * https://www.suse.com/security/cve/CVE-2026-29168.html
  * https://www.suse.com/security/cve/CVE-2026-29169.html
  * https://www.suse.com/security/cve/CVE-2026-33006.html
  * https://www.suse.com/security/cve/CVE-2026-33007.html
  * https://www.suse.com/security/cve/CVE-2026-33523.html
  * https://www.suse.com/security/cve/CVE-2026-33857.html
  * https://www.suse.com/security/cve/CVE-2026-34032.html
  * https://www.suse.com/security/cve/CVE-2026-34059.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1263935
  * https://bugzilla.suse.com/show_bug.cgi?id=1263950
  * https://bugzilla.suse.com/show_bug.cgi?id=1263951
  * https://bugzilla.suse.com/show_bug.cgi?id=1263952
  * https://bugzilla.suse.com/show_bug.cgi?id=1263953
  * https://bugzilla.suse.com/show_bug.cgi?id=1263954
  * https://bugzilla.suse.com/show_bug.cgi?id=1263955
  * https://bugzilla.suse.com/show_bug.cgi?id=1263956
  * https://bugzilla.suse.com/show_bug.cgi?id=1263957
  * https://bugzilla.suse.com/show_bug.cgi?id=1264150
  * https://bugzilla.suse.com/show_bug.cgi?id=1264163

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