SUSE-SU-2026:4403-1: important: Security update for python-tornado6

SLE-UPDATES null at suse.de
Wed Sep 30 16:31:15 UTC 2026 

# Security update for python-tornado6

Announcement ID: SUSE-SU-2026:4403-1  
Release Date: 2026-09-30T11:52:29Z  
Rating: important  
References:

  * bsc#1280689
  * bsc#1281059
  * bsc#1281439
  * bsc#1281440

  
Cross-References:

  * CVE-2023-54397
  * CVE-2024-58384
  * CVE-2026-91990
  * CVE-2026-91991

  
CVSS scores:

  * CVE-2023-54397 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N
  * CVE-2023-54397 ( NVD ):  9.0
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:N/SC:L/SI:H/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-2023-54397 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N
  * CVE-2024-58384 ( SUSE ):  6.3
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/SA:N
  * CVE-2024-58384 ( SUSE ):  6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
  * CVE-2024-58384 ( NVD ):  6.3
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/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-2024-58384 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N
  * CVE-2026-91990 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-91990 ( NVD ):  8.7
    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
  * CVE-2026-91990 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-91991 ( SUSE ):  7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
  * CVE-2026-91991 ( NVD ):  6.3
    CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:L/VA:N/SC:L/SI:L/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-2026-91991 ( NVD ):  5.4 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N

  
Affected Products:

  * openSUSE Leap 15.4
  * Python 3 Module 15-SP7
  * SUSE Linux Enterprise Desktop 15 SP7
  * SUSE Linux Enterprise High Performance Computing 15 SP4
  * SUSE Linux Enterprise High Performance Computing 15 SP5
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
  * SUSE Linux Enterprise Server 15 SP4
  * SUSE Linux Enterprise Server 15 SP4 LTSS
  * SUSE Linux Enterprise Server 15 SP5
  * SUSE Linux Enterprise Server 15 SP5 LTSS
  * SUSE Linux Enterprise Server 15 SP6
  * SUSE Linux Enterprise Server 15 SP6 LTSS
  * SUSE Linux Enterprise Server 15 SP7
  * SUSE Linux Enterprise Server for SAP Applications 15 SP4
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6
  * SUSE Linux Enterprise Server for SAP Applications 15 SP7

  
  
An update that solves four vulnerabilities can now be installed.

## Description:

This update for python-tornado6 fixes the following issues:

  * CVE-2023-54397: Tornado before 6.3.3 contains an HTTP request smuggling
    vulnerability due to improper parsing of Content-Length headers accepting
    non-standard characters. At (bsc#1280689).
  * CVE-2024-58384: CRLF injection in CurlAsyncHTTPClient headers (bsc#1281059).
  * CVE-2026-91990: splitting of multipart data before validation of the
    `max_parts` limit allows for resource exhaustion and a denial of service
    (bsc#1281439).
  * CVE-2026-91991: incomplete fix for cookie attribute injection allows for
    cookie validation bypass via semicolon- delimited data in capitalized
    parameters (bsc#1281440).

## 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 Enterprise Server for SAP Applications 15 SP4  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4403

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4403

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4403

  * openSUSE Leap 15.4  
    zypper in -t patch SUSE-2026-4403

  * SUSE Linux Enterprise Server for SAP Applications 15 SP5  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4403

  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4403

  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5  
    zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4403

  * SUSE Linux Enterprise Server for SAP Applications 15 SP6  
    zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-4403

  * SUSE Linux Enterprise Server 15 SP4 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4403

  * Python 3 Module 15-SP7  
    zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-4403

  * SUSE Linux Enterprise Server 15 SP5 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4403

  * SUSE Linux Enterprise Server 15 SP6 LTSS  
    zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-4403

## Package List:

  * SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64
    x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64
    x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64
    x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64
    x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * Python 3 Module 15-SP7 (aarch64 ppc64le s390x x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1
  * SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
    * python311-tornado6-debuginfo-6.3.2-150400.9.27.1
    * python311-tornado6-6.3.2-150400.9.27.1
    * python-tornado6-debugsource-6.3.2-150400.9.27.1

## References:

  * https://www.suse.com/security/cve/CVE-2023-54397.html
  * https://www.suse.com/security/cve/CVE-2024-58384.html
  * https://www.suse.com/security/cve/CVE-2026-91990.html
  * https://www.suse.com/security/cve/CVE-2026-91991.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1280689
  * https://bugzilla.suse.com/show_bug.cgi?id=1281059
  * https://bugzilla.suse.com/show_bug.cgi?id=1281439
  * https://bugzilla.suse.com/show_bug.cgi?id=1281440

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