SUSE-SU-2026:1761-1: important: Security update for nginx
SLE-SECURITY-UPDATES
null at suse.de
Fri May 8 16:31:14 UTC 2026
# Security update for nginx
Announcement ID: SUSE-SU-2026:1761-1
Release Date: 2026-05-08T08:58:17Z
Rating: important
References:
* bsc#1257675
* bsc#1260416
* bsc#1260417
* bsc#1260418
Cross-References:
* CVE-2026-1642
* CVE-2026-27654
* CVE-2026-27784
* CVE-2026-28753
CVSS scores:
* CVE-2026-1642 ( SUSE ): 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N
* CVE-2026-1642 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-1642 ( NVD ): 8.2
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:H/VA:N/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-2026-1642 ( NVD ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:H/A:N
* CVE-2026-27654 ( 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-2026-27654 ( SUSE ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
* CVE-2026-27654 ( NVD ): 8.8
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/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-2026-27654 ( NVD ): 8.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:H
* CVE-2026-27784 ( 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-2026-27784 ( SUSE ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-27784 ( 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-2026-27784 ( NVD ): 7.8 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
* CVE-2026-27784 ( NVD ): 5.5 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:H
* CVE-2026-28753 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/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-2026-28753 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-28753 ( NVD ): 6.3
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/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-2026-28753 ( NVD ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Products:
* openSUSE Leap 15.6
* Server Applications Module 15-SP7
* SUSE Linux Enterprise Real Time 15 SP7
* SUSE Linux Enterprise Server 15 SP6
* SUSE Linux Enterprise Server 15 SP6 LTSS
* SUSE Linux Enterprise Server 15 SP7
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
* SUSE Linux Enterprise Server for SAP Applications 15 SP7
An update that solves four vulnerabilities can now be installed.
## Description:
This update for nginx fixes the following issues:
* CVE-2026-1642: plain text data injection into the response from an upstream
proxied server via MITM attack (bsc#1257675).
* CVE-2026-27654: buffer overflow in the NGINX worker process via the
`ngx_http_dav_module` module (bsc#1260416).
* CVE-2026-27784: NGINX worker memory overread or overwrite via a specially
crafted MP4 file (bsc#1260417).
* CVE-2026-28753: arbitrary header injection into SMTP upstream requests via
attacker-controlled DNS server (bsc#1260418).
## 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:
* openSUSE Leap 15.6
zypper in -t patch SUSE-2026-1761=1
* Server Applications Module 15-SP7
zypper in -t patch SUSE-SLE-Module-Server-Applications-15-SP7-2026-1761=1
* SUSE Linux Enterprise Server 15 SP6 LTSS
zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-1761=1
* SUSE Linux Enterprise Server for SAP Applications 15 SP6
zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-1761=1
## Package List:
* openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
* nginx-debugsource-1.21.5-150600.10.15.1
* nginx-debuginfo-1.21.5-150600.10.15.1
* nginx-1.21.5-150600.10.15.1
* openSUSE Leap 15.6 (noarch)
* nginx-source-1.21.5-150600.10.15.1
* Server Applications Module 15-SP7 (aarch64 ppc64le s390x x86_64)
* nginx-debugsource-1.21.5-150600.10.15.1
* nginx-debuginfo-1.21.5-150600.10.15.1
* nginx-1.21.5-150600.10.15.1
* Server Applications Module 15-SP7 (noarch)
* nginx-source-1.21.5-150600.10.15.1
* SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
* nginx-debugsource-1.21.5-150600.10.15.1
* nginx-debuginfo-1.21.5-150600.10.15.1
* nginx-1.21.5-150600.10.15.1
* SUSE Linux Enterprise Server 15 SP6 LTSS (noarch)
* nginx-source-1.21.5-150600.10.15.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
* nginx-debugsource-1.21.5-150600.10.15.1
* nginx-debuginfo-1.21.5-150600.10.15.1
* nginx-1.21.5-150600.10.15.1
* SUSE Linux Enterprise Server for SAP Applications 15 SP6 (noarch)
* nginx-source-1.21.5-150600.10.15.1
## References:
* https://www.suse.com/security/cve/CVE-2026-1642.html
* https://www.suse.com/security/cve/CVE-2026-27654.html
* https://www.suse.com/security/cve/CVE-2026-27784.html
* https://www.suse.com/security/cve/CVE-2026-28753.html
* https://bugzilla.suse.com/show_bug.cgi?id=1257675
* https://bugzilla.suse.com/show_bug.cgi?id=1260416
* https://bugzilla.suse.com/show_bug.cgi?id=1260417
* https://bugzilla.suse.com/show_bug.cgi?id=1260418
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