SUSE alert SUSE-SU-2026:20919-1 (python-tornado6)

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SLE-SECURITY-UPDATES <null@suse.de>
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sle-security-updates@lists.suse.com
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SUSE-SU-2026:20919-1: important: Security update for python-tornado6
Date:
             
 
Wed, 01 Apr 2026 12:38:50 -0000
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<177504713080.568.17016804999896231841@634a8d224e68>


# Security update for python-tornado6

Announcement ID: SUSE-SU-2026:20919-1  
Release Date: 2026-03-20T10:53:33Z  
Rating: important  
References:

  * bsc#1259553
  * bsc#1259630

  
Cross-References:

  * CVE-2026-31958

  
CVSS scores:

  * CVE-2026-31958 ( SUSE ):  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
  * CVE-2026-31958 ( SUSE ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  * CVE-2026-31958 ( 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-2026-31958 ( NVD ):  7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

  
Affected Products:

  * SUSE Linux Enterprise Server - BCI 16.0

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

## Description:

This update for python-tornado6 fixes the following issues:

  * CVE-2026-31958: parsing large multipart bodies with many parts can cause a
    denial of service (bsc#1259553).
  * incomplete validation of cookie attributes allows for injection of user-
    controlled values in other cookie attributes (bsc#1259630).

## 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 - BCI 16.0  
    zypper in -t patch SUSE-SLES-16.0-420=1

## Package List:

  * SUSE Linux Enterprise Server - BCI 16.0 (aarch64 ppc64le s390x x86_64)
    * python313-tornado6-debuginfo-6.5-160000.4.1
    * python313-tornado6-6.5-160000.4.1
    * python-tornado6-debugsource-6.5-160000.4.1

## References:

  * https://www.suse.com/security/cve/CVE-2026-31958.html
  * https://bugzilla.suse.com/show_bug.cgi?id=1259553
  * https://bugzilla.suse.com/show_bug.cgi?id=1259630



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