Upstream information

CVE-2026-57585 at MITRE

Description

MessagePack is the serializer implementation for Python msgpack.org. Prior to 1.2.1, there is an Out-of-bounds read/crash on Unpacker reuse after a caught error, potentially leading to a DoS attack. If the Unpacker is used repeatedly after an error occurs, the process may crash with a SEGV. This issue has been fixed in version 1.2.1.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 7.5 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network Network
Attack Complexity Low Low
Privileges Required None None
User Interaction None None
Scope Unchanged Unchanged
Confidentiality Impact None None
Integrity Impact None None
Availability Impact High High
CVSSv3 Version 3.1 3.1
SUSE Bugzilla entry: 1269947 [NEW]

No SUSE Security Announcements cross referenced.

List of packages in QA

Product(s) Package(s)
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Micro 5.3
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Micro 5.4
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Micro 5.5
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Module for Public Cloud 15 SP7
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server 15 SP7
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise High Performance Computing 15 SP7
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Module for Python 3 15 SP7
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Linux Enterprise Server 15 SP7
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Linux Enterprise Desktop 15 SP7
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Linux Enterprise Server for SAP Applications 15 SP7
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Linux Enterprise High Performance Computing 15 SP7
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Linux Enterprise Server 15 SP4-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server 15 SP4-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server 15 SP5-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server 15 SP5-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server 15 SP6-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Linux Enterprise Server 15 SP6-LTSS
  • python3-msgpack >= 0.5.6-150100.3.6.1
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Linux Enterprise Server for SAP Applications 15 SP4
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server for SAP Applications 15 SP5
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Linux Enterprise Server for SAP Applications 15 SP6
  • python3-msgpack >= 0.5.6-150100.3.6.1
  • python311-msgpack >= 1.0.7-150600.3.5.1
SUSE Manager Proxy LTS 4.3
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Manager Retail Branch Server LTS 4.3
  • python3-msgpack >= 0.5.6-150100.3.6.1
SUSE Manager Server LTS 4.3
  • python3-msgpack >= 0.5.6-150100.3.6.1

Status of this issue by product and package

Please note that this evaluation state might be work in progress, incomplete or outdated. Also information for service packs in the LTSS phase is only included for issues meeting the LTSS criteria. If in doubt, feel free to contact us for clarification. The updates are grouped by state of their lifecycle. SUSE product lifecycles are documented on the lifecycle page.

Product(s) Source package State
Products under general support and receiving all security fixes.
SUSE Linux Enterprise Desktop 15 SP7 python-msgpack In progress
SUSE Linux Enterprise High Performance Computing 12 python-msgpack-python Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 python-msgpack In progress
SUSE Linux Enterprise Micro 5.3 python-msgpack In progress
SUSE Linux Enterprise Micro 5.4 python-msgpack In progress
SUSE Linux Enterprise Micro 5.5 python-msgpack In progress
SUSE Linux Enterprise Module for Public Cloud 15 SP7 python-msgpack In progress
SUSE Linux Enterprise Module for Python 3 15 SP7 python-msgpack In progress
SUSE Linux Enterprise Server 15 SP7 python-msgpack In progress
SUSE Linux Enterprise Server 16.0 python-msgpack In progress
SUSE Linux Enterprise Server 16.1 python-msgpack Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 python-msgpack In progress
SUSE Linux Enterprise Server for SAP applications 16.0 python-msgpack In progress
SUSE Linux Enterprise Server for SAP applications 16.1 python-msgpack Affected
SUSE Linux Micro 6.0 python-msgpack Affected
SUSE Linux Micro 6.1 python-msgpack Affected
SUSE Manager Client Tools 12 python-msgpack-python Affected
SUSE Manager Client Tools for SLE 12 python-msgpack-python Affected
openSUSE Leap 16.0 python-msgpack Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS python-msgpack In progress
SUSE Linux Enterprise High Performance Computing 15 SP5 python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS python-msgpack In progress
SUSE Linux Enterprise Module for Basesystem 15 SP4 python-msgpack Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 python-msgpack Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 python-msgpack Affected
SUSE Linux Enterprise Module for Python 3 15 SP6 python-msgpack Affected
SUSE Linux Enterprise Server 12 SP5 python-msgpack-python Affected
SUSE Linux Enterprise Server 15 SP4 python-msgpack Affected
SUSE Linux Enterprise Server 15 SP4-LTSS python-msgpack In progress
SUSE Linux Enterprise Server 15 SP5 python-msgpack Affected
SUSE Linux Enterprise Server 15 SP5-LTSS python-msgpack In progress
SUSE Linux Enterprise Server 15 SP6 python-msgpack Affected
SUSE Linux Enterprise Server 15 SP6-LTSS python-msgpack In progress
SUSE Linux Enterprise Server for SAP Applications 12 SP5 python-msgpack-python Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 python-msgpack In progress
SUSE Manager Proxy 4.3 python-msgpack Affected
SUSE Manager Proxy LTS 4.3 python-msgpack In progress
SUSE Manager Retail Branch Server 4.3 python-msgpack Affected
SUSE Manager Retail Branch Server LTS 4.3 python-msgpack In progress
SUSE Manager Server 4.3 python-msgpack Affected
SUSE Manager Server LTS 4.3 python-msgpack In progress
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 3.0 python-msgpack-python Affected
SUSE CaaS Platform 4.0 python-msgpack Affected
SUSE Enterprise Storage 5 python-msgpack-python Affected
SUSE Enterprise Storage 6 python-msgpack Affected
SUSE Enterprise Storage 7 python-msgpack Affected
SUSE Enterprise Storage 7.1 python-msgpack Affected
SUSE Linux Enterprise Desktop 15 SP1 python-msgpack Affected
SUSE Linux Enterprise Desktop 15 SP2 python-msgpack Affected
SUSE Linux Enterprise Desktop 15 SP3 python-msgpack Affected
SUSE Linux Enterprise Desktop 15 SP4 python-msgpack Affected
SUSE Linux Enterprise Desktop 15 SP5 python-msgpack Affected
SUSE Linux Enterprise Desktop 15 SP6 python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS python-msgpack Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS python-msgpack In progress
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS python-msgpack In progress
SUSE Linux Enterprise High Performance Computing 15 SP6 python-msgpack Affected
SUSE Linux Enterprise Micro 5.0 python-msgpack Affected
SUSE Linux Enterprise Micro 5.1 python-msgpack Affected
SUSE Linux Enterprise Micro 5.2 python-msgpack Affected
SUSE Linux Enterprise Module for Advanced Systems Management 12 python-msgpack-python Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 python-msgpack Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 python-msgpack Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 python-msgpack Affected
SUSE Linux Enterprise Module for Python 2 15 SP1 python-msgpack Affected
SUSE Linux Enterprise Module for Python 2 15 SP2 python-msgpack Affected
SUSE Linux Enterprise Module for Python 2 15 SP3 python-msgpack Affected
SUSE Linux Enterprise Point of Sale 12 SP2 python-msgpack-python Affected
SUSE Linux Enterprise Real Time 15 SP2 python-msgpack Affected
SUSE Linux Enterprise Real Time 15 SP3 python-msgpack Affected
SUSE Linux Enterprise Real Time 15 SP4 python-msgpack Affected
SUSE Linux Enterprise Server 12 python-msgpack-python Affected
SUSE Linux Enterprise Server 12 SP3 python-msgpack-python Affected
SUSE Linux Enterprise Server 12 SP4 python-msgpack-python Affected
SUSE Linux Enterprise Server 15 SP1 python-msgpack Affected
SUSE Linux Enterprise Server 15 SP1-BCL python-msgpack Affected
SUSE Linux Enterprise Server 15 SP1-LTSS python-msgpack Affected
SUSE Linux Enterprise Server 15 SP2 python-msgpack Affected
SUSE Linux Enterprise Server 15 SP2-BCL python-msgpack Affected
SUSE Linux Enterprise Server 15 SP2-LTSS python-msgpack Affected
SUSE Linux Enterprise Server 15 SP3 python-msgpack Affected
SUSE Linux Enterprise Server 15 SP3-BCL python-msgpack Affected
SUSE Linux Enterprise Server 15 SP3-LTSS python-msgpack Affected
SUSE Linux Enterprise Server for SAP Applications 12 python-msgpack-python Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 python-msgpack-python Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 python-msgpack-python Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 python-msgpack Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 python-msgpack Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 python-msgpack Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 python-msgpack In progress
SUSE Linux Enterprise Server for SAP Applications 15 SP5 python-msgpack In progress
SUSE Manager Proxy 3.1 python-msgpack-python Affected
SUSE Manager Proxy 3.2 python-msgpack-python Affected
SUSE Manager Proxy 4.0 python-msgpack Affected
SUSE Manager Proxy 4.1 python-msgpack Affected
SUSE Manager Proxy 4.2 python-msgpack Affected
SUSE Manager Retail Branch Server 4.0 python-msgpack Affected
SUSE Manager Retail Branch Server 4.1 python-msgpack Affected
SUSE Manager Retail Branch Server 4.2 python-msgpack Affected
SUSE Manager Server 3.1 python-msgpack-python Affected
SUSE Manager Server 3.2 python-msgpack-python Affected
SUSE Manager Server 4.0 python-msgpack Affected
SUSE Manager Server 4.1 python-msgpack Affected
SUSE Manager Server 4.2 python-msgpack Affected
openSUSE Leap 15.3 python-msgpack Affected
openSUSE Leap 15.4 python-msgpack Affected
openSUSE Leap 15.5 python-msgpack Affected
openSUSE Leap 15.6 python-msgpack Affected
openSUSE Leap Micro 5.2 python-msgpack Affected
openSUSE Leap Micro 5.3 python-msgpack Affected
openSUSE Leap Micro 5.4 python-msgpack Affected
openSUSE Leap Micro 5.5 python-msgpack Affected

SUSE Timeline for this CVE

CVE page created: Wed Jul 1 02:14:46 2026
CVE page last modified: Thu Jul 2 12:55:15 2026