Upstream information

CVE-2026-31958 at MITRE

Description

Tornado is a Python web framework and asynchronous networking library. In versions of Tornado prior to 6.5.5, the only limit on the number of parts in multipart/form-data is the max_body_size setting (default 100MB). Since parsing occurs synchronously on the main thread, this creates the possibility of denial-of-service due to the cost of parsing very large multipart bodies with many parts. This vulnerability is fixed in 6.5.5.

SUSE information

Overall state of this security issue: Pending

This issue is currently rated as having important severity.

CVSS v3 Scores
CVSS detail SUSE
Base Score 7.5
Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Attack Vector Network
Attack Complexity Low
Privileges Required None
User Interaction None
Scope Unchanged
Confidentiality Impact None
Integrity Impact None
Availability Impact High
CVSSv3 Version 3.1
CVSS v4 Scores
CVSS detail CNA (GitHub) SUSE
Base Score 8.7 8.7
Vector 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/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 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
Attack Vector Network Network
Attack Complexity Low Low
Attack Requirements None None
Privileges Required None None
User Interaction None None
Vulnerable System Confidentiality Impact None None
Vulnerable System Integrity Impact None None
Vulnerable System Availability Impact High High
Subsequent System Confidentiality Impact None None
Subsequent System Integrity Impact None None
Subsequent System Availability Impact None None
CVSSv4 Version 4.0 4.0
SUSE Bugzilla entry: 1259552 [NEW]

No SUSE Security Announcements cross referenced.


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Please note that this evaluation state might be work in progress, incomplete or outdated.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-tornado Affected
SUSE Linux Enterprise Desktop 15 SP7 python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 12 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP7 python-tornado6 Affected
SUSE Linux Enterprise Micro 5.2 python-tornado Affected
SUSE Linux Enterprise Micro 5.2 salt Affected
SUSE Linux Enterprise Micro 5.3 python-tornado Affected
SUSE Linux Enterprise Micro 5.3 salt Affected
SUSE Linux Enterprise Micro 5.4 python-tornado Affected
SUSE Linux Enterprise Micro 5.4 salt Affected
SUSE Linux Enterprise Micro 5.5 python-tornado Affected
SUSE Linux Enterprise Micro 5.5 salt Affected
SUSE Linux Enterprise Module for Basesystem 15 SP7 python-tornado Affected
SUSE Linux Enterprise Module for Python 3 15 SP7 python-tornado Affected
SUSE Linux Enterprise Module for Python 3 15 SP7 python-tornado6 Affected
SUSE Linux Enterprise Server 15 SP7 python-tornado Affected
SUSE Linux Enterprise Server 15 SP7 python-tornado6 Affected
SUSE Linux Enterprise Server 16.0 python-tornado6 Affected
SUSE Linux Enterprise Server 16.1 python-tornado6 Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP7 python-tornado6 Affected
SUSE Linux Enterprise Server for SAP applications 16.0 python-tornado6 Affected
SUSE Linux Enterprise Server for SAP applications 16.1 python-tornado6 Affected
SUSE Linux Micro 6.0 python-tornado Affected
SUSE Linux Micro 6.0 python-tornado6 Affected
SUSE Linux Micro 6.0 salt Affected
SUSE Linux Micro 6.1 python-tornado Affected
SUSE Linux Micro 6.1 python-tornado6 Affected
SUSE Linux Micro 6.1 salt Affected
SUSE Linux Micro 6.2 python-tornado6 Affected
SUSE Manager Client Tools 12 python-tornado Affected
SUSE Manager Client Tools for SLE 12 python-tornado Affected
openSUSE Leap 15.6 python-tornado Affected
openSUSE Leap 15.6 python-tornado6 Affected
openSUSE Leap 15.6 salt Affected
Products under Long Term Service Pack support and receiving important and critical security fixes.
SUSE Linux Enterprise High Performance Computing 15 SP4 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 15 SP4 salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP5 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP5 python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 15 SP5 salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-LTSS salt Affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 SP4 salt Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 SP5 salt Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 SP6 salt Affected
SUSE Linux Enterprise Module for Python 3 15 SP4 python-tornado6 Affected
SUSE Linux Enterprise Module for Python 3 15 SP5 python-tornado6 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP4 salt Affected
SUSE Linux Enterprise Module for Server Applications 15 SP5 salt Affected
SUSE Linux Enterprise Module for Server Applications 15 SP6 salt Affected
SUSE Linux Enterprise Module for Systems Management 15 SP6 salt Affected
SUSE Linux Enterprise Module for Transactional Server 15 SP4 salt Affected
SUSE Linux Enterprise Module for Transactional Server 15 SP6 salt Affected
SUSE Linux Enterprise Server 12 SP5 python-tornado Affected
SUSE Linux Enterprise Server 15 SP4 python-tornado Affected
SUSE Linux Enterprise Server 15 SP4 python-tornado6 Affected
SUSE Linux Enterprise Server 15 SP4 salt Affected
SUSE Linux Enterprise Server 15 SP4-LTSS python-tornado Affected
SUSE Linux Enterprise Server 15 SP4-LTSS python-tornado6 Affected
SUSE Linux Enterprise Server 15 SP4-LTSS salt Affected
SUSE Linux Enterprise Server 15 SP5 python-tornado Affected
SUSE Linux Enterprise Server 15 SP5 python-tornado6 Affected
SUSE Linux Enterprise Server 15 SP5 salt Affected
SUSE Linux Enterprise Server 15 SP5-LTSS python-tornado Affected
SUSE Linux Enterprise Server 15 SP5-LTSS python-tornado6 Affected
SUSE Linux Enterprise Server 15 SP5-LTSS salt Affected
SUSE Linux Enterprise Server 15 SP6-LTSS python-tornado Affected
SUSE Linux Enterprise Server 15 SP6-LTSS python-tornado6 Affected
SUSE Linux Enterprise Server 15 SP6-LTSS salt Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP5 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 python-tornado6 Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP6 salt Affected
SUSE Manager Proxy 4.3 python-tornado Affected
SUSE Manager Proxy 4.3 python-tornado6 Affected
SUSE Manager Proxy 4.3 salt Affected
SUSE Manager Proxy LTS 4.3 python-tornado Affected
SUSE Manager Proxy LTS 4.3 salt Affected
SUSE Manager Retail Branch Server 4.3 python-tornado Affected
SUSE Manager Retail Branch Server 4.3 python-tornado6 Affected
SUSE Manager Retail Branch Server 4.3 salt Affected
SUSE Manager Retail Branch Server LTS 4.3 python-tornado Affected
SUSE Manager Retail Branch Server LTS 4.3 salt Affected
SUSE Manager Server 4.3 python-tornado Affected
SUSE Manager Server 4.3 python-tornado6 Affected
SUSE Manager Server 4.3 salt Affected
SUSE Manager Server LTS 4.3 python-tornado Affected
SUSE Manager Server LTS 4.3 salt Affected
Products past their end of life and not receiving proactive updates anymore.
SUSE CaaS Platform 3.0 python-tornado Affected
SUSE CaaS Platform 4.0 python-tornado Affected
SUSE CaaS Platform 4.0 salt Not affected
SUSE Enterprise Storage 3 python-tornado Affected
SUSE Enterprise Storage 4 python-tornado Affected
SUSE Enterprise Storage 6 python-tornado Affected
SUSE Enterprise Storage 6 salt Not affected
SUSE Enterprise Storage 7 python-tornado Affected
SUSE Enterprise Storage 7 salt Not affected
SUSE Enterprise Storage 7.1 python-tornado Affected
SUSE Enterprise Storage 7.1 salt Affected
SUSE Linux Enterprise Desktop 12 python-tornado Affected
SUSE Linux Enterprise Desktop 12 SP1 python-tornado Affected
SUSE Linux Enterprise Desktop 15 python-tornado Affected
SUSE Linux Enterprise Desktop 15 SP1 python-tornado Affected
SUSE Linux Enterprise Desktop 15 SP1 salt Not affected
SUSE Linux Enterprise Desktop 15 SP2 python-tornado Affected
SUSE Linux Enterprise Desktop 15 SP2 salt Not affected
SUSE Linux Enterprise Desktop 15 SP3 python-tornado Affected
SUSE Linux Enterprise Desktop 15 SP3 salt Affected
SUSE Linux Enterprise Desktop 15 SP4 python-tornado Affected
SUSE Linux Enterprise Desktop 15 SP4 python-tornado6 Affected
SUSE Linux Enterprise Desktop 15 SP4 salt Affected
SUSE Linux Enterprise Desktop 15 SP5 python-tornado Affected
SUSE Linux Enterprise Desktop 15 SP5 python-tornado6 Affected
SUSE Linux Enterprise Desktop 15 SP5 salt Affected
SUSE Linux Enterprise Desktop 15 SP6 python-tornado Affected
SUSE Linux Enterprise Desktop 15 SP6 python-tornado6 Affected
SUSE Linux Enterprise Desktop 15 SP6 salt Affected
SUSE Linux Enterprise High Performance Computing 15 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP1 salt Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-ESPOS salt Not affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP1-LTSS salt Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP2 salt Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-ESPOS salt Not affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP2-LTSS salt Not affected
SUSE Linux Enterprise High Performance Computing 15 SP3 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP3 salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-ESPOS salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP3-LTSS salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS salt Affected
SUSE Linux Enterprise High Performance Computing 15 SP6 python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15 SP6 python-tornado6 Affected
SUSE Linux Enterprise High Performance Computing 15 SP6 salt Affected
SUSE Linux Enterprise High Performance Computing 15-ESPOS python-tornado Affected
SUSE Linux Enterprise High Performance Computing 15-LTSS python-tornado Affected
SUSE Linux Enterprise Micro 5.0 salt Not affected
SUSE Linux Enterprise Micro 5.1 salt Affected
SUSE Linux Enterprise Module for Advanced Systems Management 12 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 SP1 salt Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 SP2 salt Not affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 python-tornado Affected
SUSE Linux Enterprise Module for Basesystem 15 SP3 salt Affected
SUSE Linux Enterprise Module for Python 2 15 SP1 python-tornado Affected
SUSE Linux Enterprise Module for Python 2 15 SP1 salt Not affected
SUSE Linux Enterprise Module for Python 2 15 SP2 python-tornado Affected
SUSE Linux Enterprise Module for Python 2 15 SP3 python-tornado Affected
SUSE Linux Enterprise Module for Python 3 15 SP6 python-tornado6 Affected
SUSE Linux Enterprise Module for Server Applications 15 SP1 salt Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP2 salt Not affected
SUSE Linux Enterprise Module for Server Applications 15 SP3 salt Affected
SUSE Linux Enterprise Module for Transactional Server 15 SP2 salt Not affected
SUSE Linux Enterprise Module for Transactional Server 15 SP3 salt Affected
SUSE Linux Enterprise Module for Transactional Server 15 SP5 salt Affected
SUSE Linux Enterprise Point of Sale 12 SP2 python-tornado Affected
SUSE Linux Enterprise Real Time 15 SP2 python-tornado Affected
SUSE Linux Enterprise Real Time 15 SP2 salt Not affected
SUSE Linux Enterprise Real Time 15 SP3 python-tornado Affected
SUSE Linux Enterprise Real Time 15 SP3 salt Affected
SUSE Linux Enterprise Real Time 15 SP4 python-tornado Affected
SUSE Linux Enterprise Real Time 15 SP4 salt Affected
SUSE Linux Enterprise Server 12 python-tornado Affected
SUSE Linux Enterprise Server 12 SP1 python-tornado Affected
SUSE Linux Enterprise Server 12 SP3 python-tornado Affected
SUSE Linux Enterprise Server 12 SP4 python-tornado Affected
SUSE Linux Enterprise Server 15 python-tornado Affected
SUSE Linux Enterprise Server 15 SP1 python-tornado Affected
SUSE Linux Enterprise Server 15 SP1 salt Not affected
SUSE Linux Enterprise Server 15 SP1-BCL python-tornado Affected
SUSE Linux Enterprise Server 15 SP1-BCL salt Not affected
SUSE Linux Enterprise Server 15 SP1-LTSS python-tornado Affected
SUSE Linux Enterprise Server 15 SP1-LTSS salt Not affected
SUSE Linux Enterprise Server 15 SP2 python-tornado Affected
SUSE Linux Enterprise Server 15 SP2 salt Not affected
SUSE Linux Enterprise Server 15 SP2-BCL python-tornado Affected
SUSE Linux Enterprise Server 15 SP2-BCL salt Not affected
SUSE Linux Enterprise Server 15 SP2-LTSS python-tornado Affected
SUSE Linux Enterprise Server 15 SP2-LTSS salt Not affected
SUSE Linux Enterprise Server 15 SP3 python-tornado Affected
SUSE Linux Enterprise Server 15 SP3 salt Affected
SUSE Linux Enterprise Server 15 SP3-BCL python-tornado Affected
SUSE Linux Enterprise Server 15 SP3-BCL salt Affected
SUSE Linux Enterprise Server 15 SP3-LTSS python-tornado Affected
SUSE Linux Enterprise Server 15 SP3-LTSS salt Affected
SUSE Linux Enterprise Server 15 SP6 python-tornado Affected
SUSE Linux Enterprise Server 15 SP6 python-tornado6 Affected
SUSE Linux Enterprise Server 15 SP6 salt Affected
SUSE Linux Enterprise Server 15-LTSS python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 12 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP1 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP3 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 12 SP4 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP1 salt Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP2 salt Not affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP3 salt Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 python-tornado6 Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP4 salt Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 python-tornado Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 python-tornado6 Affected
SUSE Linux Enterprise Server for SAP Applications 15 SP5 salt Affected
SUSE Linux Enterprise Workstation Extension 12 python-tornado Affected
SUSE Linux Enterprise Workstation Extension 12 SP1 python-tornado Affected
SUSE Manager Proxy 3.0 python-tornado Affected
SUSE Manager Proxy 3.1 python-tornado Affected
SUSE Manager Proxy 3.2 python-tornado Affected
SUSE Manager Proxy 4.0 python-tornado Affected
SUSE Manager Proxy 4.0 salt Not affected
SUSE Manager Proxy 4.1 python-tornado Affected
SUSE Manager Proxy 4.1 salt Not affected
SUSE Manager Proxy 4.2 python-tornado Affected
SUSE Manager Proxy 4.2 salt Affected
SUSE Manager Retail Branch Server 4.0 python-tornado Affected
SUSE Manager Retail Branch Server 4.0 salt Not affected
SUSE Manager Retail Branch Server 4.1 python-tornado Affected
SUSE Manager Retail Branch Server 4.1 salt Not affected
SUSE Manager Retail Branch Server 4.2 python-tornado Affected
SUSE Manager Retail Branch Server 4.2 salt Affected
SUSE Manager Server 3.0 python-tornado Affected
SUSE Manager Server 3.1 python-tornado Affected
SUSE Manager Server 3.2 python-tornado Affected
SUSE Manager Server 4.0 python-tornado Affected
SUSE Manager Server 4.0 salt Not affected
SUSE Manager Server 4.1 python-tornado Affected
SUSE Manager Server 4.1 salt Not affected
SUSE Manager Server 4.2 python-tornado Affected
SUSE Manager Server 4.2 salt Affected
openSUSE Leap 15.3 python-tornado Affected
openSUSE Leap 15.3 salt Affected
openSUSE Leap 15.4 python-tornado Affected
openSUSE Leap 15.4 python-tornado6 Affected
openSUSE Leap 15.4 salt Affected
openSUSE Leap 15.5 python-tornado Affected
openSUSE Leap 15.5 python-tornado6 Affected
openSUSE Leap 15.5 salt Affected
openSUSE Leap Micro 5.2 python-tornado Affected
openSUSE Leap Micro 5.2 salt Affected
openSUSE Leap Micro 5.3 python-tornado Affected
openSUSE Leap Micro 5.3 salt Affected
openSUSE Leap Micro 5.4 python-tornado Affected
openSUSE Leap Micro 5.4 salt Affected
openSUSE Leap Micro 5.5 python-tornado Affected
openSUSE Leap Micro 5.5 salt Affected
Products at an unknown state of their lifecycle.
SUSE Linux Enterprise Server 16 python-tornado Affected
SUSE Linux Enterprise Server 16 python-tornado6 Affected
SUSE Linux Enterprise Server for SAP applications 16 python-tornado Affected
SUSE Linux Enterprise Server for SAP applications 16 python-tornado6 Affected


SUSE Timeline for this CVE

CVE page created: Wed Mar 11 22:00:16 2026
CVE page last modified: Thu Mar 12 14:46:38 2026