SUSE-SU-2026:2883-1: moderate: Security update for nghttp2

[SLE-UPDATES]

# 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 patch SUSE-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

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