ESB-2026.3528 — Vulnetix

ESB-2026.3528 PUBLISHED CVSS 7.5 HIGH

=========================================================================== AUSCERT External Security Bulletin Redistribution ESB-2026.3528 Security update for nghttp2 13 April 2026 =========================================================================== AUSCERT Security Bulletin Summary --------------------------------- Product: nghttp2 Publisher: SUSE Operating System: SUSE Resolution: Patch/Upgrade CVE Names: CVE-2026-27135 Original Bulletin: https://www.suse.com/support/update/announcement/2026/suse-su-20261247-1 Comment: CVSS (Max): 7.5 CVE-2026-27135 (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H) CVSS Source: SUSE Calculator: https://www.first.org/cvss/calculator/3.1#CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H EPSS (Max): 0.0% (4th) CVE-2026-27135 2026-04-12 - --------------------------BEGIN INCLUDED TEXT-------------------- Security update for nghttp2 Announcement ID: SUSE-SU-2026:1247-1 Release Date: 2026-04-10T10:35:16Z Rating: important References: o bsc#1259845 Cross-References: o CVE-2026-27135 o CVE-2026-27135 ( 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 o CVE-2026-27135 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N CVSS scores: /S:U/C:N/I:N/A:H o CVE-2026-27135 ( NVD ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/ S:U/C:N/I:N/A:H 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 SP5 Affected o SUSE Linux Enterprise Micro 5.2 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 5.2 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 An update that solves one vulnerability can now be installed. Description: This update for nghttp2 fixes the following issue: o CVE-2026-27135: assertion failure due to missing state validation can lead to DoS (bsc#1259845). 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 Server for SAP Applications 15 SP4 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-1247=1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-1247=1 o SUSE Linux Enterprise Micro 5.2 zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1247=1 o SUSE Linux Enterprise Micro for Rancher 5.2 zypper in -t patch SUSE-SUSE-MicroOS-5.2-2026-1247=1 o SUSE Linux Enterprise Micro for Rancher 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1247=1 o SUSE Linux Enterprise Micro 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-1247=1 o SUSE Linux Enterprise Micro for Rancher 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-1247=1 o SUSE Linux Enterprise Micro 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-1247=1 o SUSE Linux Enterprise Micro 5.5 zypper in -t patch SUSE-SLE-Micro-5.5-2026-1247=1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-1247=1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-1247=1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-1247=1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-1247=1 o SUSE Linux Enterprise Server 15 SP4 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-1247=1 o SUSE Linux Enterprise Server 15 SP5 LTSS zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-1247=1 Package List: o SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP4 (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise Server for SAP Applications 15 SP5 (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 o SUSE Linux Enterprise Micro 5.2 (aarch64 s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 o SUSE Linux Enterprise Micro for Rancher 5.2 (aarch64 s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 o SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 o SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 o SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 o SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 o SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 o SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise Server 15 SP4 LTSS (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 o SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64) libnghttp2-14-1.40.0-150200.22.1 nghttp2-debuginfo-1.40.0-150200.22.1 nghttp2-debugsource-1.40.0-150200.22.1 libnghttp2_asio-devel-1.40.0-150200.22.1 libnghttp2-14-debuginfo-1.40.0-150200.22.1 libnghttp2_asio1-debuginfo-1.40.0-150200.22.1 libnghttp2-devel-1.40.0-150200.22.1 libnghttp2_asio1-1.40.0-150200.22.1 o SUSE Linux Enterprise Server 15 SP5 LTSS (x86_64) libnghttp2-14-32bit-debuginfo-1.40.0-150200.22.1 libnghttp2-14-32bit-1.40.0-150200.22.1 References: o https://www.suse.com/security/cve/CVE-2026-27135.html o https://bugzilla.suse.com/show_bug.cgi?id=1259845 - --------------------------END INCLUDED TEXT---------------------- You have received this e-mail bulletin as a result of your organisation's registration with AUSCERT. 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Risk Scores

CVSS v3.1

7.5

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Affected Products

Vendor	Product	Versions
SUSE	nghttp2

Timeline

Apr 13, 2026 CVE Published

References

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