SUSE-SU-2026:3448-1: important: Security update for nginx

SLE-SECURITY-UPDATES null at suse.de
Mon Aug 3 17:08:03 UTC 2026 

# Security update for nginx

Announcement ID: SUSE-SU-2026:3448-1  
Release Date: 2026-08-03T11:17:08Z  
Rating: important  
References:

  * bsc#1267525
  * bsc#1268492
  * bsc#1268495
  * bsc#1271514

  
Cross-References:

  * CVE-2026-42055
  * CVE-2026-42533
  * CVE-2026-48142

  
CVSS scores:

  * CVE-2026-42055 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-42055 ( NVD ):  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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-42055 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-42055 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-42533 ( SUSE ):  9.2
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-42533 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-42533 ( NVD ):  9.2
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-42533 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-48142 ( SUSE ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-48142 ( NVD ):  6.3
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  * CVE-2026-48142 ( NVD ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L

  
Affected Products:

  * openSUSE Leap 15.4
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP4 LTSS
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP5 LTSS
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5

  
  
An update that solves three vulnerabilities and has one security fix can now be
installed.

## Description:

This update for nginx fixes the following issues:

  * CVE-2026-42055: heap buffer overflow in the `ngx_http_proxy_v2_module` and
    `ngx_http_grpc_module` modules (bsc#1268492).
  * CVE-2026-42533: heap buffer overflow in the `map` directive and regex
    matching (bsc#1271514).
  * CVE-2026-48142: heap buffer overread in the `ngx_http_charset_module` module
    (bsc#1268495).
  * Remote denial of service via the HTTP/2 bomb exploit (bsc#1267525).

## 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 Linux Enterprise Server 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-3448=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-3448=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-3448=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-3448=1

  * SUSE Linux Enterprise Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-3448=1

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-3448=1

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-3448=1

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-3448=1

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2026-3448=1

## Package List:

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
    x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
    x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * openSUSE Leap 15.4 (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
    x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
    x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch)
    * nginx-source-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
    * nginx-debuginfo-1.21.5-150400.3.25.1
    * nginx-1.21.5-150400.3.25.1
    * nginx-debugsource-1.21.5-150400.3.25.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch)
    * nginx-source-1.21.5-150400.3.25.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-42055.html
  * https://www.suse.com/security/cve/CVE-2026-42533.html
  * https://www.suse.com/security/cve/CVE-2026-48142.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1267525
  * https://bugzilla.suse.com/show_bug.cgi?id=1268492
  * https://bugzilla.suse.com/show_bug.cgi?id=1268495
  * https://bugzilla.suse.com/show_bug.cgi?id=1271514

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