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202
security advisorybuffer overflowimportantopenSUSE nginx Important Buffer Overflow and Header Injection 2026-1953-1
An update that solves four vulnerabilities and has one security fix can now be installed.. # Security update for nginx Announcement ID: SUSE-SU-2026:1953-1 Release Date: 2026-05-18T07:53:53Z Rating: important References: * bsc#1243502 * 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 15.4 * 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 four vulnerabilities and has one security fix can now be installed. ## Description: This update for nginx fixes the following issues Security issues: * CVE-2026-1642: plain text data injection into the response from an upstream proxied server (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 over-read or over-write via a specially crafted MP4 file (bsc#1260417). * CVE-2026-28753: improper handling onf CRLF sequences in DNS responses allows for arbitrary header injection into SMTP upstream requests (bsc#1260418). Non security issue: * nginx always runs into "timed out. Killing" on shutdown whenthere are long- running processes (bsc#1243502). ## 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 High Performance Computing LTSS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1953=1 * SUSE Linux Enterprise Server 15 SP4 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-1953=1 * SUSE Linux Enterprise Server 15 SP5 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1953=1 * openSUSE Leap 15.4 zypper in -t patch SUSE-2026-1953=1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1953=1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1953=1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1953=1 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-1953=1 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1953=1 ## Package List: * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (noarch) * nginx-source-1.21.5-150400.3.15.1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server 15 SP4 LTSS (noarch) * nginx-source-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server 15 SP5 LTSS(aarch64 ppc64le s390x x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server 15 SP5 LTSS (noarch) * nginx-source-1.21.5-150400.3.15.1 * openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * openSUSE Leap 15.4 (noarch) * nginx-source-1.21.5-150400.3.15.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (noarch) * nginx-source-1.21.5-150400.3.15.1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (noarch) * nginx-source-1.21.5-150400.3.15.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (noarch) * nginx-source-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (noarch) * nginx-source-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64) * nginx-debugsource-1.21.5-150400.3.15.1 * nginx-1.21.5-150400.3.15.1 * nginx-debuginfo-1.21.5-150400.3.15.1 * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (noarch) * nginx-source-1.21.5-150400.3.15.1 ## 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=1243502 * 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 . Critical security fix for nginx released with multiple issues addressed. Check the details to secure your system.. openSUSE nginx patch release security fix update. . Severity: Important. LinuxSecurity.com Team
May 18, 2026
•Important
OpenSUSE
202
security advisorybuffer overflowimportantopenSUSE Leap 15.6 nginx Major Vulnerabilities Buffer Overflows 2026-1761-1
An update that solves four vulnerabilities can now be installed.. # 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 patchSUSE-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 . Critical update for openSUSE nginx fixes multiple vulnerabilities, including buffer overflows and injection issues, enhance security now.. openSUSE nginx buffer overflow security update. . Severity: Important. LinuxSecurity.com Team
May 08, 2026
•Important
OpenSUSE
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