Security update for haproxy

Announcement ID: SUSE-SU-2026:21318-1
Release Date: 2026-04-22T10:53:44Z
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 Micro 6.0

An update that solves one vulnerability can now be installed.

Description:

This update for haproxy fixes the following issue:

  • CVE-2026-33555: improper validation when matching a received body length to a previously announced Content-Length can lead to request smuggling due to 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:

  • SUSE Linux Micro 6.0
    zypper in -t patch SUSE-SLE-Micro-6.0-683=1

Package List:

  • SUSE Linux Micro 6.0 (aarch64 s390x x86_64)
    • haproxy-debuginfo-2.8.11+git0.01c1056a4-3.1
    • haproxy-debugsource-2.8.11+git0.01c1056a4-3.1
    • haproxy-2.8.11+git0.01c1056a4-3.1

References: