SUSE alert openSUSE-SU-2026:20885-1 (python-flask)

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null@suse.de
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security-announce@lists.opensuse.org
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openSUSE-SU-2026:20885-1: moderate: Security update for python-Flask
Date:
             
 
Wed, 03 Jun 2026 17:51:21 +0200
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<20260603155121.A24B0FCEE@maintenance.suse.de>
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Article
openSUSE security update: security update for python-flask
-------------------------------------------------------------

Announcement ID: openSUSE-SU-2026:20885-1
Rating: moderate
References:

  * bsc#1258700



Cross-References:

  * CVE-2026-27205



CVSS scores:

  * CVE-2026-27205 ( SUSE ): 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
  * CVE-2026-27205 ( SUSE ): 6 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N

Affected Products:

         openSUSE Leap 16.0

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

An update that solves one vulnerability and has one bug fix can now be installed.

Description:

This update for python-Flask fixes the following issue:

- CVE-2026-27205: information disclosure due to Flask session not adding the `Vary: Cookie` header
(bsc#1258700).


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-16.0-878=1

Package List:

- openSUSE Leap 16.0:

  python313-Flask-3.1.1-160000.3.1
  python313-Flask-doc-3.1.1-160000.3.1

References:

  * https://www.suse.com/security/cve/CVE-2026-27205.html