Security update for haproxy

Announcement ID: SUSE-SU-2026:1568-1
Release Date: 2026-04-23T12:11:11Z
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:
  • openSUSE Leap 15.6
  • SUSE Linux Enterprise High Availability Extension 15 SP6
  • SUSE Linux Enterprise High Availability Extension 15 SP7
  • SUSE Linux Enterprise Server 15 SP6
  • SUSE Linux Enterprise Server 15 SP7
  • SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves one vulnerability can now be installed.

Description:

This update for haproxy fixes the following issue:

  • CVE-2026-33555: Request smuggling via HTTP/3 parser desynchronization (bsc#1262103).

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:

  • openSUSE Leap 15.6
    zypper in -t patch SUSE-2026-1568=1
  • SUSE Linux Enterprise High Availability Extension 15 SP6
    zypper in -t patch SUSE-SLE-Product-HA-15-SP6-2026-1568=1
  • SUSE Linux Enterprise High Availability Extension 15 SP7
    zypper in -t patch SUSE-SLE-Product-HA-15-SP7-2026-1568=1

Package List:

  • openSUSE Leap 15.6 (aarch64 ppc64le s390x x86_64 i586)
    • haproxy-2.8.11+git0.01c1056a4-150600.3.12.1
    • haproxy-debugsource-2.8.11+git0.01c1056a4-150600.3.12.1
    • haproxy-debuginfo-2.8.11+git0.01c1056a4-150600.3.12.1
  • SUSE Linux Enterprise High Availability Extension 15 SP6 (aarch64 ppc64le s390x x86_64)
    • haproxy-2.8.11+git0.01c1056a4-150600.3.12.1
    • haproxy-debugsource-2.8.11+git0.01c1056a4-150600.3.12.1
    • haproxy-debuginfo-2.8.11+git0.01c1056a4-150600.3.12.1
  • SUSE Linux Enterprise High Availability Extension 15 SP7 (aarch64 ppc64le s390x x86_64)
    • haproxy-2.8.11+git0.01c1056a4-150600.3.12.1
    • haproxy-debugsource-2.8.11+git0.01c1056a4-150600.3.12.1
    • haproxy-debuginfo-2.8.11+git0.01c1056a4-150600.3.12.1

References: