Security update for python-tornado

Announcement ID: SUSE-SU-2026:3291-1
Release Date: 2026-07-27T15:15:54Z
Rating: important
References:
Cross-References:
CVSS scores:
  • CVE-2026-49853 ( SUSE ): 7.4 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:N/A:N
  • CVE-2026-49853 ( NVD ): 7.7 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
  • CVE-2026-49854 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N
  • CVE-2026-49854 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
  • CVE-2026-49855 ( SUSE ): 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
  • CVE-2026-49855 ( 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 Desktop 12
  • SUSE Linux Enterprise Desktop 12 SP1
  • SUSE Linux Enterprise Desktop 12 SP2
  • SUSE Linux Enterprise Desktop 12 SP3
  • SUSE Linux Enterprise Desktop 12 SP4
  • SUSE Linux Enterprise High Performance Computing 12 SP2
  • SUSE Linux Enterprise High Performance Computing 12 SP3
  • SUSE Linux Enterprise High Performance Computing 12 SP4
  • SUSE Linux Enterprise High Performance Computing 12 SP5
  • SUSE Linux Enterprise Server 12
  • SUSE Linux Enterprise Server 12 SP1
  • SUSE Linux Enterprise Server 12 SP2
  • SUSE Linux Enterprise Server 12 SP3
  • SUSE Linux Enterprise Server 12 SP4
  • SUSE Linux Enterprise Server 12 SP5
  • SUSE Linux Enterprise Server for SAP Applications 12
  • SUSE Linux Enterprise Server for SAP Applications 12 SP1
  • SUSE Linux Enterprise Server for SAP Applications 12 SP2
  • SUSE Linux Enterprise Server for SAP Applications 12 SP3
  • SUSE Linux Enterprise Server for SAP Applications 12 SP4
  • SUSE Linux Enterprise Server for SAP Applications 12 SP5
  • SUSE Linux Enterprise Server for the Raspberry Pi 12-SP2
  • SUSE Manager Client Tools for SLE 12

An update that solves three vulnerabilities can now be installed.

Description:

This update for python-tornado fixes the following issues

  • CVE-2026-49853: authorization header forwarded across cross-origin redirects in SimpleAsyncHTTPClient (bsc#1268395).
  • CVE-2026-49854: out-of-bounds memory access via C extension (bsc#1268396).
  • CVE-2026-49855: AsyncHTTPClient accumulates decompressed chunks without size limit (bsc#1268397).

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 Manager Client Tools for SLE 12
    zypper in -t patch SUSE-SLE-Manager-Tools-12-2026-3291=1

Package List:

  • SUSE Manager Client Tools for SLE 12 (aarch64 ppc64le s390x x86_64)
    • python-tornado-debugsource-4.2.1-17.21.1
    • python-tornado-debuginfo-4.2.1-17.21.1
    • python-tornado-4.2.1-17.21.1
    • python3-tornado-4.2.1-17.21.1

References: