SUSE-SU-2025:20331-1: critical: Security update for python-httpcore, python-h11

[SLE-SECURITY-UPDATES]

# Security update for python-httpcore, python-h11

Announcement ID: SUSE-SU-2025:20331-1  
Release Date: May 20, 2025, 8:51 a.m.  
Rating: critical  
References:

  * bsc#1241872

  
Cross-References:

  * CVE-2025-43859

  
CVSS scores:

  * CVE-2025-43859 ( SUSE ):  9.3
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
  * CVE-2025-43859 ( SUSE ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
  * CVE-2025-43859 ( NVD ):  9.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

  
Affected Products:

  * SUSE Linux Micro 6.0

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for python-httpcore, python-h11 fixes the following issues:

python-h11: \- Update 0.16.0: * CVE-2025-43859: Fixed accepting of malformed
Chunked-Encoding bodies (bsc#1241872) \- 0.15.0: * Reject Content-Lengths >= 1
zettabyte (1 billion terabytes) early, without attempting to parse the integer
(#181)

python-httpcore: \- CVE-2025-43859: Fixed accepting of malformed Chunked-
Encoding bodies (bsc#1241872)

## 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-6.0-327=1

## Package List:

  * SUSE Linux Micro 6.0 (noarch)
    * python311-h11-0.16.0-1.1
    * python311-httpcore-0.16.3-7.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-43859.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1241872

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