SUSE alert openSUSE-SU-2026:21159-1 (python-py7zr)

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null@suse.de
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openSUSE-SU-2026:21159-1: important: Security update for python-py7zr
Date:
             
 
Tue, 30 Jun 2026 09:48:40 +0200
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<20260630074840.B1476FF4B@maintenance.suse.de>
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Article
openSUSE security update: security update for python-py7zr
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:21159-1
Rating: important
References:

  * bsc#1268665
  * bsc#1268666
  * bsc#1268669



Cross-References:

  * CVE-2026-23879
  * CVE-2026-55195
  * CVE-2026-55206



Affected Products:

         openSUSE Leap 16.0

-------------------------------------------------------------

An update that solves 3 vulnerabilities and has 3 bug fixes can now be installed.

Description:

This update for python-py7zr fixes the following issues:

Changes in python-py7zr:

- CVE-2026-23879: crafted malicious symbolic link chains in an archive can
  lead to an arbitrary file write (bsc#1268669)
- CVE-2026-55195: unchecked extraction size can cause a denial of service (bsc#1268665)
- CVE-2026-55206: crafted .7z archive with a large numstreams value can
  cause a denial of service (bsc#1268666)


Patch instructions:

   To install this openSUSE security 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 16.0

   zypper in -t patch openSUSE-Leap-16.0-packagehub-354=1

Package List:

- openSUSE Leap 16.0:

  python313-py7zr-1.0.0-bp160.2.1

References:

  * https://www.suse.com/security/cve/CVE-2026-23879.html
  * https://www.suse.com/security/cve/CVE-2026-55195.html
  * https://www.suse.com/security/cve/CVE-2026-55206.html