ESB-2026.4678

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.4678 Security update for curl 7 May 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: curl Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-1965 CVE-2026-6253 CVE-2026-6429 CVE-2026-6276 CVE-2026-5545 CVE-2026-4873 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261717-1 Comment: CVSS (Max): 7.5 CVE-2026-1965 (CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:N EPSS (Max): 0.1% (18th)* CVE-2026-1965 2026-05-06 * Not all EPSS found when published - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for curl Announcement ID: SUSE-SU-2026:1717-1 Release Date: 2026-05-06T12:14:02Z Rating: important o bsc#1259362 o bsc#1262631 o bsc#1262632 References: o bsc#1262635 o bsc#1262636 o bsc#1262638 o CVE-2026-1965 o CVE-2026-4873 o CVE-2026-5545 Cross-References: o CVE-2026-6253 o CVE-2026-6276 o CVE-2026-6429 o CVE-2026-1965 ( SUSE ): 6.9 CVSS:4.0/AV:L/AC:L/AT:P/PR:L/ UI:P/VC:H/VI:H/VA:N/SC:H/SI:H/SA:N o CVE-2026-1965 ( SUSE ): 7.5 CVSS:3.1/AV:L/AC:H/PR:L/UI:N/ S:C/C:H/I:H/A:N o CVE-2026-1965 ( NVD ): 6.5 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/ S:U/C:N/I:H/A:N o CVE-2026-4873 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-4873 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:L/I:N/A:N o CVE-2026-5545 ( SUSE ): 8.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N o CVE-2026-5545 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ CVSS scores: S:U/C:L/I:H/A:N o CVE-2026-6253 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-6253 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:H/I:N/A:N o CVE-2026-6276 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-6276 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:L/I:N/A:N o CVE-2026-6429 ( SUSE ): 8.2 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/ UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N o CVE-2026-6429 ( SUSE ): 5.9 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/ S:U/C:H/I:N/A:N o openSUSE Leap 15.4 o SUSE Linux Enterprise Desktop 15 SP4 o SUSE Linux Enterprise Desktop 15 SP5 o SUSE Linux Enterprise High Performance Computing 15 SP4 o SUSE Linux Enterprise High Performance Computing 15 SP5 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 o SUSE Linux Enterprise High Performance Computing LTSS 15 Affected SP5 Products: o SUSE Linux Enterprise Micro 5.3 o SUSE Linux Enterprise Micro 5.4 o SUSE Linux Enterprise Micro 5.5 o SUSE Linux Enterprise Micro for Rancher 5.3 o SUSE Linux Enterprise Micro for Rancher 5.4 o SUSE Linux Enterprise Server 15 SP4 o SUSE Linux Enterprise Server 15 SP4 LTSS o SUSE Linux Enterprise Server 15 SP5 o SUSE Linux Enterprise Server 15 SP5 LTSS o SUSE Linux Enterprise Server for SAP Applications 15 SP4 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 o SUSE Manager Proxy 4.3 o SUSE Manager Retail Branch Server 4.3 o SUSE Manager Server 4.3 An update that solves six vulnerabilities can now be installed. Description: This update for curl fixes the following issues: Security issues fixed: o CVE-2026-4873: connection reuse ignores TLS requirement (bsc#1262631). o CVE-2026-5545: wrong reuse of HTTP Negotiate connection (bsc#1262632). o CVE-2026-6253: proxy credentials leak over redirect-to proxy (bsc#1262635). o CVE-2026-6276: stale custom cookie host causes cookie leak (bsc#1262636). o CVE-2026-6429: netrc credential leak with reused proxy connection (bsc# 1262638). Other updates and bugfixes: o sws: prevent "connection monitor" to say disconnect twice (bsc#1259362). 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: o SUSE Linux Enterprise High Performance Computing 15 SP5 zypper in -t patch SUSE-SLE-INSTALLER-15-SP5-2026-1717=1 o SUSE Linux Enterprise Server 15 SP5 zypper in -t patch SUSE-SLE-INSTALLER-15-SP5-2026-1717=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 zypper in -t patch SUSE-SLE-INSTALLER-15-SP5-2026-1717=1 SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1717=1 o SUSE Linux Enterprise Desktop 15 SP5 zypper in -t patch SUSE-SLE-INSTALLER-15-SP5-2026-1717=1 o SUSE Linux Enterprise Micro for Rancher 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1717=1 o SUSE Linux Enterprise Micro 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1717=1 o SUSE Linux Enterprise Micro for Rancher 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-1717=1 o SUSE Linux Enterprise Micro 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-1717=1 o SUSE Linux Enterprise Micro 5.5 zypper in -t patch SUSE-SLE-Micro-5.5-2026-1717=1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1717=1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1717=1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1717=1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1717=1 o SUSE Linux Enterprise Server 15 SP4 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-1717=1 o SUSE Linux Enterprise Server 15 SP5 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1717=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-1717=1 SUSE-SLE-INSTALLER-15-SP4-2026-1717=1 o openSUSE Leap 15.4 zypper in -t patch SUSE-2026-1717=1 o SUSE Linux Enterprise High Performance Computing 15 SP4 zypper in -t patch SUSE-SLE-INSTALLER-15-SP4-2026-1717=1 o SUSE Linux Enterprise Server 15 SP4 zypper in -t patch SUSE-SLE-INSTALLER-15-SP4-2026-1717=1 o SUSE Manager Server 4.3 zypper in -t patch SUSE-SLE-INSTALLER-15-SP4-2026-1717=1 o SUSE Linux Enterprise Desktop 15 SP4 zypper in -t patch SUSE-SLE-INSTALLER-15-SP4-2026-1717=1 o SUSE Manager Retail Branch Server 4.3 zypper in -t patch SUSE-SLE-INSTALLER-15-SP4-2026-1717=1 o SUSE Manager Proxy 4.3 zypper in -t patch SUSE-SLE-INSTALLER-15-SP4-2026-1717=1 Package List: o SUSE Linux Enterprise High Performance Computing 15 SP5 (aarch64 x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server 15 SP5 (aarch64 ppc64le s390x x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Desktop 15 SP5 (x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64) libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64) libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64) libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64) libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64) libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server 15 SP4 LTSS (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server 15 SP5 LTSS (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64) libcurl-devel-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 o openSUSE Leap 15.4 (aarch64 ppc64le s390x x86_64 i586) libcurl-devel-8.14.1-150400.5.83.1 curl-mini-debugsource-8.14.1-150400.5.83.1 libcurl4-8.14.1-150400.5.83.1 curl-debugsource-8.14.1-150400.5.83.1 curl-debuginfo-8.14.1-150400.5.83.1 libcurl-mini4-debuginfo-8.14.1-150400.5.83.1 libcurl-mini4-8.14.1-150400.5.83.1 libcurl4-debuginfo-8.14.1-150400.5.83.1 curl-8.14.1-150400.5.83.1 o openSUSE Leap 15.4 (noarch) curl-zsh-completion-8.14.1-150400.5.83.1 curl-fish-completion-8.14.1-150400.5.83.1 libcurl-devel-doc-8.14.1-150400.5.83.1 o openSUSE Leap 15.4 (x86_64) libcurl4-32bit-debuginfo-8.14.1-150400.5.83.1 libcurl4-32bit-8.14.1-150400.5.83.1 libcurl-devel-32bit-8.14.1-150400.5.83.1 o openSUSE Leap 15.4 (aarch64_ilp32) libcurl4-64bit-8.14.1-150400.5.83.1 libcurl-devel-64bit-8.14.1-150400.5.83.1 libcurl4-64bit-debuginfo-8.14.1-150400.5.83.1 o SUSE Linux Enterprise High Performance Computing 15 SP4 (aarch64 x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Server 15 SP4 (aarch64 ppc64le s390x x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Manager Server 4.3 (ppc64le s390x x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Linux Enterprise Desktop 15 SP4 (x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Manager Retail Branch Server 4.3 (x86_64) libcurl4-8.14.1-150400.5.83.1 o SUSE Manager Proxy 4.3 (x86_64) libcurl4-8.14.1-150400.5.83.1 References: o https://www.suse.com/security/cve/CVE-2026-1965.html o https://www.suse.com/security/cve/CVE-2026-4873.html o https://www.suse.com/security/cve/CVE-2026-5545.html o https://www.suse.com/security/cve/CVE-2026-6253.html o https://www.suse.com/security/cve/CVE-2026-6276.html o https://www.suse.com/security/cve/CVE-2026-6429.html o https://bugzilla.suse.com/show_bug.cgi?id=1259362 o https://bugzilla.suse.com/show_bug.cgi?id=1262631 o https://bugzilla.suse.com/show_bug.cgi?id=1262632 o https://bugzilla.suse.com/show_bug.cgi?id=1262635 o https://bugzilla.suse.com/show_bug.cgi?id=1262636 o https://bugzilla.suse.com/show_bug.cgi?id=1262638 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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