SUSE-SU-2026:3408-1: important: Security update for python-dulwich

[SLE-UPDATES]

# Security update for python-dulwich

Announcement ID: SUSE-SU-2026:3408-1  
Release Date: 2026-07-29T11:13:04Z  
Rating: important  
References:

  * bsc#1271525

  
Cross-References:

  * CVE-2026-38974

  
CVSS scores:

  * CVE-2026-38974 ( SUSE ):  8.1 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
  * CVE-2026-38974 ( NVD ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

  
Affected Products:

  * Public Cloud Module 12
  * SUSE Linux Enterprise High Performance Computing 12 SP2
  * SUSE Linux Enterprise High Performance Computing 12 SP3
  * SUSE Linux Enterprise High Performance Computing 12 SP4
  * SUSE Linux Enterprise High Performance Computing 12 SP5
  * SUSE Linux Enterprise Server 12
  * SUSE Linux Enterprise Server 12 SP1
  * SUSE Linux Enterprise Server 12 SP2
  * SUSE Linux Enterprise Server 12 SP3
  * SUSE Linux Enterprise Server 12 SP4
  * SUSE Linux Enterprise Server 12 SP5
  * SUSE Linux Enterprise Server for SAP Applications 12
  * SUSE Linux Enterprise Server for SAP Applications 12 SP1
  * SUSE Linux Enterprise Server for SAP Applications 12 SP2
  * SUSE Linux Enterprise Server for SAP Applications 12 SP3
  * SUSE Linux Enterprise Server for SAP Applications 12 SP4
  * SUSE Linux Enterprise Server for SAP Applications 12 SP5

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for python-dulwich fixes the following issue

  * CVE-2026-38974: Dulwich through 1.1.0 was found to be missing SSH host key
    verification in contrib/paramiko_vendor.py (bsc#1271525).

## 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:

  * Public Cloud Module 12  
    zypper in -t patch SUSE-SLE-Module-Public-Cloud-12-2026-3408=1

## Package List:

  * Public Cloud Module 12 (aarch64 ppc64le s390x x86_64)
    * python-dulwich-0.18.5-4.9.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-38974.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1271525

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