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openSUSE Python-Tornado6 Important Memory Access Issue 2026-2725-1

opensuse
Calendar Grey July 2, 2026
Dist Opensuse Esm H88
Three important vulnerabilities in python-tornado6 for openSUSE have available updates to enhance security against potential threats.
An update that solves three vulnerabilities can now be installed.

Description

This update for python-tornado6 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).

Topics%20covered

Topics Covered

security advisory important memory access OpenSUSE authorization python-tornado6

Patch

## 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 15 SP5 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-2725=1

* SUSE Linux Enterprise Server 15 SP4 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-2725=1

* Python 3 Module 15-SP7

zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-2725=1

* SUSE Linux Enterprise Server 15 SP6 LTSS

zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-2725=1

* openSUSE Leap 15.4

zypper in -t patch SUSE-2026-2725=1

* SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4

zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-2725=1

* SUSE Linux Enterprise Server for SAP Applications 15 SP4

zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-2725=1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4

zypper in -t patch...

Read the Full Advisory

Package List

* SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)

* python311-tornado6-debuginfo-6.3.2-150400.9.18.1

* python-tornado6-debugsource-6.3.2-150400.9.18.1

* python311-tornado6-6.3.2-150400.9.18.1

* SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64

x86_64)

* python311-tornado6-debuginfo-6.3.2-150400.9.18.1

* python-tornado6-debugsource-6.3.2-150400.9.18.1

* python311-tornado6-6.3.2-150400.9.18.1

* SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)

* python311-tornado6-debuginfo-6.3.2-150400.9.18.1

* python-tornado6-debugsource-6.3.2-150400.9.18.1

* python311-tornado6-6.3.2-150400.9.18.1

* openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)

* python311-tornado6-debuginfo-6.3.2-150400.9.18.1

* python-tornado6-debugsource-6.3.2-150400.9.18.1

* python311-tornado6-6.3.2-150400.9.18.1

* SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)

* python311-tornado6-debuginfo-6.3.2-150400.9.18.1

*...

Read the Full Advisory

References

* bsc#1268395

* bsc#1268396

* bsc#1268397

## References:

* https://www.suse.com/security/cve/CVE-2026-49853.html

* https://www.suse.com/security/cve/CVE-2026-49854.html

* https://www.suse.com/security/cve/CVE-2026-49855.html

* https://bugzilla.suse.com/show_bug.cgi?id=1268395

* https://bugzilla.suse.com/show_bug.cgi?id=1268396

* https://bugzilla.suse.com/show_bug.cgi?id=1268397

Severity
important
Lowest
Low
Medium
High
Critical

Announcement ID: SUSE-SU-2026:2725-1
Release Date: 2026-07-02T13:52:50Z
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

Topics%20covered

Topics Covered

security advisory important memory access OpenSUSE authorization python-tornado6

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