SUSE-SU-2026:21873-1: moderate: Security update for python-idna

[SLE-UPDATES]

# Security update for python-idna

Announcement ID: SUSE-SU-2026:21873-1  
Release Date: 2026-05-28T15:00:00Z  
Rating: moderate  
References:

  * bsc#1265413

  
Cross-References:

  * CVE-2026-45409

  
CVSS scores:

  * CVE-2026-45409 ( SUSE ):  6.9
    CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
  * CVE-2026-45409 ( SUSE ):  5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

  
Affected Products:

  * SUSE Linux Micro 6.1

  
  
An update that solves one vulnerability can now be installed.

## Description:

This update for python-idna fixes the following issue

  * CVE-2026-45409: specially crafted inputs to idna.encode() can bypass earlier
    security fix (bsc#1265413).

## 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 6.1  
    zypper in -t patch SUSE-SLE-Micro-6.1-553=1

## Package List:

  * SUSE Linux Micro 6.1 (noarch)
    * python311-idna-3.7-slfo.1.1_2.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-45409.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1265413

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