Security update for haproxy

Announcement ID: SUSE-SU-2026:21353-1
Release Date: 2026-04-23T08:06:25Z
Rating: moderate
References:
Cross-References:
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 Enterprise Server High Availability Extension 16.0

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 Enterprise Server High Availability Extension 16.0
    zypper in -t patch SUSE-SLES-HA-16.0-632=1

Package List:

  • SUSE Linux Enterprise Server High Availability Extension 16.0 (ppc64le s390x x86_64)
    • haproxy-3.2.15+git64.0fc44b458-160000.2.1
    • haproxy-debugsource-3.2.15+git64.0fc44b458-160000.2.1
    • haproxy-debuginfo-3.2.15+git64.0fc44b458-160000.2.1

References: