Security update for python-Flask

Announcement ID: SUSE-SU-2026:0849-1
Release Date: 2026-03-09T10:13:48Z
Rating: moderate
References:
Cross-References:
CVSS scores:
  • CVE-2026-27205 ( SUSE ): 6.0 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
  • 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 ( NVD ): 2.3 CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
  • CVE-2026-27205 ( NVD ): 4.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N
Affected Products:
  • openSUSE Leap 15.4
  • openSUSE Leap 15.6
  • Python 3 Module 15-SP7
  • SUSE Linux Enterprise Desktop 15 SP7
  • SUSE Linux Enterprise Server 15 SP7
  • SUSE Linux Enterprise Server for SAP Applications 15 SP7

An update that solves one vulnerability 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 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:

  • openSUSE Leap 15.4
    zypper in -t patch SUSE-2026-849=1
  • openSUSE Leap 15.6
    zypper in -t patch openSUSE-SLE-15.6-2026-849=1
  • Python 3 Module 15-SP7
    zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-849=1

Package List:

  • openSUSE Leap 15.4 (noarch)
    • python311-Flask-2.3.2-150400.3.9.1
    • python311-Flask-doc-2.3.2-150400.3.9.1
  • openSUSE Leap 15.6 (noarch)
    • python311-Flask-2.3.2-150400.3.9.1
    • python311-Flask-doc-2.3.2-150400.3.9.1
  • Python 3 Module 15-SP7 (noarch)
    • python311-Flask-2.3.2-150400.3.9.1

References: