SUSE alert SUSE-SU-2026:21832-1 (nginx)

From:
             
 
SLE-SECURITY-UPDATES <null@suse.de>
To:
             
 
sle-security-updates@lists.suse.com
Subject:
             
 
SUSE-SU-2026:21832-1: important: Security update for nginx
Date:
             
 
Wed, 27 May 2026 12:30:19 -0000
Message-ID:
             
 
<177988501913.114.13365562537917045598@4542fd0e0e60>
# Security update for nginx

Announcement ID: SUSE-SU-2026:21832-1  
Release Date: 2026-05-25T07:43:18Z  
Rating: important  
References:

  * bsc#1260415
  * bsc#1260420
  * bsc#1265229
  * bsc#1265231
  * bsc#1265232
  * bsc#1265233

  
Cross-References:

  * CVE-2026-27651
  * CVE-2026-32647
  * CVE-2026-40701
  * CVE-2026-42934
  * CVE-2026-42945
  * CVE-2026-42946

  
CVSS scores:

  * CVE-2026-27651 ( 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-2026-27651 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-27651 ( NVD ):  8.7

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/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-2026-27651 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-32647 ( SUSE ):  7.3
    CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-32647 ( SUSE ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-32647 ( NVD ):  8.5

CVSS:4.0/AV:L/AC:L/AT:N/PR:L/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-2026-32647 ( NVD ):  7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-40701 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
  * CVE-2026-40701 ( SUSE ):  5.6 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:L/A:L
  * CVE-2026-40701 ( NVD ):  6.3

CVSS:4.0/AV:N/AC:L/AT:P/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-2026-40701 ( NVD ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-42934 ( SUSE ):  6.3

CVSS:4.0/AV:N/AC:L/AT:P/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-2026-42934 ( SUSE ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-42934 ( NVD ):  6.3

CVSS:4.0/AV:N/AC:L/AT:P/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-2026-42934 ( NVD ):  4.8 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:L
  * CVE-2026-42945 ( SUSE ):  8.3
    CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N
  * CVE-2026-42945 ( SUSE ):  8.6 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:H
  * CVE-2026-42945 ( 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-2026-42945 ( NVD ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-42946 ( SUSE ):  8.3

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/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-2026-42946 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L
  * CVE-2026-42946 ( NVD ):  8.3

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/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-2026-42946 ( NVD ):  6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:L

  
Affected Products:

  * SUSE Linux Enterprise Server 16.0
  * SUSE Linux Enterprise Server for SAP applications 16.0

  
  
An update that solves six vulnerabilities can now be installed.

## Description:

This update for nginx fixes the following issues

  * CVE-2026-27651: denial of service via undisclosed requests when the
    `ngx_mail_auth_http_module` is enabled (bsc#1260415).
  * CVE-2026-32647: NGINX worker memory over-read or over-write via a specially
    crafted MP4 file (bsc#1260420).
  * CVE-2026-40701: heap use-after-free in the worker process when the
    `ssl_verify_client` and the `ssl_ocsp` directives are set due to issue in
    the `ngx_http_ssl_module` module (bsc#1265229).
  * CVE-2026-42934: heap buffer overread in the worker process due to issue in
    the `ngx_http_charset_module` module (bsc#1265231).
  * CVE-2026-42945: heap buffer overflow via crafted HTTP requests due to issue
    in `ngx_http_rewrite_module` (bsc#1265232).
  * CVE-2026-42946: excessive memory allocation and data overread due to issue
    in the `ngx_http_scgi_module` and `ngx_http_uwsgi_module` modules
    (bsc#1265233).

## 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 16.0  
    zypper in -t patch SUSE-SLES-16.0-798=1

  * SUSE Linux Enterprise Server for SAP applications 16.0  
    zypper in -t patch SUSE-SLES-16.0-798=1

## Package List:

  * SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
    * nginx-1.27.2-160000.4.1
    * nginx-debuginfo-1.27.2-160000.4.1
    * nginx-debugsource-1.27.2-160000.4.1
  * SUSE Linux Enterprise Server 16.0 (noarch)
    * nginx-source-1.27.2-160000.4.1
  * SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
    * nginx-1.27.2-160000.4.1
    * nginx-debuginfo-1.27.2-160000.4.1
    * nginx-debugsource-1.27.2-160000.4.1
  * SUSE Linux Enterprise Server for SAP applications 16.0 (noarch)
    * nginx-source-1.27.2-160000.4.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-27651.html
  * https://www.suse.com/security/cve/CVE-2026-32647.html
  * https://www.suse.com/security/cve/CVE-2026-40701.html
  * https://www.suse.com/security/cve/CVE-2026-42934.html
  * https://www.suse.com/security/cve/CVE-2026-42945.html
  * https://www.suse.com/security/cve/CVE-2026-42946.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1260415
  * https://bugzilla.suse.com/show_bug.cgi?id=1260420
  * https://bugzilla.suse.com/show_bug.cgi?id=1265229
  * https://bugzilla.suse.com/show_bug.cgi?id=1265231
  * https://bugzilla.suse.com/show_bug.cgi?id=1265232
  * https://bugzilla.suse.com/show_bug.cgi?id=1265233



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