SUSE-SU-2026:21280-1: moderate: Security update for haproxy

[SLE-UPDATES]

# Security update for haproxy

Announcement ID: SUSE-SU-2026:21280-1  
Release Date: 2026-04-23T08:15:56Z  
Rating: moderate  
References:

  * bsc#1261626
  * bsc#1262103

  
Cross-References:

  * CVE-2026-33555

  
CVSS scores:

  * CVE-2026-33555 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N
  * CVE-2026-33555 ( SUSE ):  4.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N
  * CVE-2026-33555 ( NVD ):  4.0 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N

  
Affected Products:

  * SUSE Linux Micro 6.2

  
  
An update that solves one vulnerability and has one fix can now be installed.

## Description:

This update for haproxy fixes the following issues:

Security issue:

  * CVE-2026-33555: Request smuggling via HTTP/3 parser desynchronization
    (bsc#1262103).
  * bug in SLZ compression (bsc#1261626).

## 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 Micro 6.2  
    zypper in -t patch SUSE-SL-Micro-6.2-632=1

## Package List:

  * SUSE Linux Micro 6.2 (aarch64 ppc64le s390x x86_64)
    * haproxy-debugsource-3.2.15+git64.0fc44b458-160000.2.1
    * haproxy-debuginfo-3.2.15+git64.0fc44b458-160000.2.1
    * haproxy-3.2.15+git64.0fc44b458-160000.2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-33555.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1261626
  * https://bugzilla.suse.com/show_bug.cgi?id=1262103

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