SUSE-SU-2025:3754-1: important: Security update for python-Authlib

[SLE-UPDATES]

# Security update for python-Authlib

Announcement ID: SUSE-SU-2025:3754-1  
Release Date: 2025-10-23T10:27:09Z  
Rating: important  
References:

  * bsc#1251921

  
Cross-References:

  * CVE-2025-61920

  
CVSS scores:

  * CVE-2025-61920 ( SUSE ):  8.7
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
  * CVE-2025-61920 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2025-61920 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * openSUSE Leap 15.6
  * Python 3 Module 15-SP6
  * Python 3 Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP6
  * SUSE Linux Enterprise Desktop 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 python-Authlib fixes the following issues:

  * CVE-2025-61920: limited the size of the header to prevent DoS (bsc#1251921).

## 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:

  * Python 3 Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2025-3754=1

  * openSUSE Leap 15.6  
    zypper in -t patch SUSE-2025-3754=1 openSUSE-SLE-15.6-2025-3754=1

  * Python 3 Module 15-SP6  
    zypper in -t patch SUSE-SLE-Module-Python3-15-SP6-2025-3754=1

## Package List:

  * Python 3 Module 15-SP7 (noarch)
    * python311-Authlib-1.3.1-150600.3.6.1
  * openSUSE Leap 15.6 (noarch)
    * python311-Authlib-1.3.1-150600.3.6.1
  * Python 3 Module 15-SP6 (noarch)
    * python311-Authlib-1.3.1-150600.3.6.1

## References:

  * https://www.suse.com/security/cve/CVE-2025-61920.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1251921

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