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SUSE nghttp2 Moderate HTTP Smuggling Risk Advisory 2026-2883-1

An update that solves one vulnerability can now be installed.. # Security update for nghttp2 Announcement ID: SUSE-SU-2026:2883-1 Release Date: 2026-07-13T09:54:51Z Rating: moderate References: * bsc#1269489 Cross-References: * CVE-2026-58055 CVSS scores: * CVE-2026-58055 ( SUSE ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:L/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-2026-58055 ( SUSE ): 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N * CVE-2026-58055 ( NVD ): 6.3 CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:L/VI:L/VA:N/SC:N/SI:L/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-2026-58055 ( NVD ): 5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N Affected Products: * SUSE Linux Enterprise Micro 5.3 * SUSE Linux Enterprise Micro 5.4 * SUSE Linux Enterprise Micro 5.5 * SUSE Linux Enterprise Micro for Rancher 5.3 * SUSE Linux Enterprise Micro for Rancher 5.4 An update that solves one vulnerability can now be installed. ## Description: This update for nghttp2 fixes the following issue * CVE-2026-58055: HTTP/1.1 Upgrade request can lead to HTTP request smuggling and cross-client response-queue poisoning (bsc#1269489). ## 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 Micro for Rancher 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-2883=1 * SUSE Linux Enterprise Micro 5.4 zypper in -t patch SUSE-SLE-Micro-5.4-2026-2883=1 * SUSE Linux Enterprise Micro for Rancher 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-2883=1 * SUSE Linux Enterprise Micro 5.3 zypper in -t patch SUSE-SLE-Micro-5.3-2026-2883=1 * SUSE Linux Enterprise Micro 5.5 zypper in -t patchSUSE-SLE-Micro-5.5-2026-2883=1 ## Package List: * SUSE Linux Enterprise Micro for Rancher 5.4 (aarch64 s390x x86_64) * libnghttp2-14-1.40.0-150200.25.1 * nghttp2-debuginfo-1.40.0-150200.25.1 * libnghttp2-14-debuginfo-1.40.0-150200.25.1 * nghttp2-debugsource-1.40.0-150200.25.1 * SUSE Linux Enterprise Micro 5.4 (aarch64 s390x x86_64) * libnghttp2-14-1.40.0-150200.25.1 * nghttp2-debuginfo-1.40.0-150200.25.1 * libnghttp2-14-debuginfo-1.40.0-150200.25.1 * nghttp2-debugsource-1.40.0-150200.25.1 * SUSE Linux Enterprise Micro 5.5 (aarch64 ppc64le s390x x86_64) * libnghttp2-14-1.40.0-150200.25.1 * nghttp2-debugsource-1.40.0-150200.25.1 * nghttp2-debuginfo-1.40.0-150200.25.1 * libnghttp2-14-debuginfo-1.40.0-150200.25.1 * SUSE Linux Enterprise Micro for Rancher 5.3 (aarch64 s390x x86_64) * libnghttp2-14-1.40.0-150200.25.1 * nghttp2-debuginfo-1.40.0-150200.25.1 * libnghttp2-14-debuginfo-1.40.0-150200.25.1 * nghttp2-debugsource-1.40.0-150200.25.1 * SUSE Linux Enterprise Micro 5.3 (aarch64 s390x x86_64) * libnghttp2-14-1.40.0-150200.25.1 * nghttp2-debuginfo-1.40.0-150200.25.1 * libnghttp2-14-debuginfo-1.40.0-150200.25.1 * nghttp2-debugsource-1.40.0-150200.25.1 ## References: * https://www.suse.com/security/cve/CVE-2026-58055.html * https://bugzilla.suse.com/show_bug.cgi?id=1269489 . A security update has been released for nghttp2 addressing a moderate issue related to HTTP smuggling risks. Install now.. SUSE updates, nghttp2 security, moderate threats, HTTP smuggling, Linux patches. . LinuxSecurity.com Team

Jul 13, 2026 SuSE