<div class="container">
<h1>Security update for python-tornado6</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:4403-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-09-30T11:52:29Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>important</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280689">bsc#1280689</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1281059">bsc#1281059</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1281439">bsc#1281439</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1281440">bsc#1281440</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>
Cross-References:
</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2023-54397.html">CVE-2023-54397</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2024-58384.html">CVE-2024-58384</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-91990.html">CVE-2026-91990</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-91991.html">CVE-2026-91991</a>
</li>
</ul>
</td>
</tr>
<tr>
<th>CVSS scores:</th>
<td>
<ul class="list-group">
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-54397</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-54397</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">9.0</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2023-54397</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2024-58384</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.3</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2024-58384</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2024-58384</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.3</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2024-58384</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.4</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-91990</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-91990</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">8.7</span>
<span class="cvss-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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-91990</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.5</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-91991</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.2</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-91991</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.3</span>
<span class="cvss-vector">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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-91991</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.4</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:L/I:L/A:N</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">openSUSE Leap 15.4</li>
<li class="list-group-item">Python 3 Module 15-SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing LTSS 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise High Performance Computing LTSS 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP4 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP5 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP6 LTSS</li>
<li class="list-group-item">SUSE Linux Enterprise Server 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP4</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP5</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP6</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP Applications 15 SP7</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves four vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for python-tornado6 fixes the following issues:</p>
<ul>
<li>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).</li>
<li>CVE-2024-58384: CRLF injection in CurlAsyncHTTPClient headers (bsc#1281059).</li>
<li>CVE-2026-91990: splitting of multipart data before validation of the <code>max_parts</code> limit allows for resource exhaustion
and a denial of service (bsc#1281439).</li>
<li>CVE-2026-91991: incomplete fix for cookie attribute injection allows for cookie validation bypass via semicolon-
delimited data in capitalized parameters (bsc#1281440).</li>
</ul>
<h2>Patch Instructions:</h2>
<p>
To install this SUSE update use the SUSE recommended
installation methods like YaST online_update or "zypper patch".<br/>
Alternatively you can run the command listed for your product:
</p>
<ul class="list-group">
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP4-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-ESPOS-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP4-LTSS-2026-4403</code>
</li>
<li class="list-group-item">
openSUSE Leap 15.4
<br/>
<code>zypper in -t patch SUSE-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP5
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP5-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-ESPOS-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise High Performance Computing LTSS 15 SP5
<br/>
<code>zypper in -t patch SUSE-SLE-Product-HPC-15-SP5-LTSS-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP Applications 15 SP6
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES_SAP-15-SP6-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP4 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP4-LTSS-2026-4403</code>
</li>
<li class="list-group-item">
Python 3 Module 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP5 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP5-LTSS-2026-4403</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server 15 SP6 LTSS
<br/>
<code>zypper in -t patch SUSE-SLE-Product-SLES-15-SP6-LTSS-2026-4403</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP4 (ppc64le x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP4 (aarch64 x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing LTSS 15 SP4 (aarch64 x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.4 (aarch64 i586 ppc64le s390x x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP5 (ppc64le x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing ESPOS 15 SP5 (aarch64 x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise High Performance Computing LTSS 15 SP5 (aarch64 x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP Applications 15 SP6 (ppc64le x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP4 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
Python 3 Module 15-SP7 (aarch64 ppc64le s390x x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP5 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server 15 SP6 LTSS (aarch64 ppc64le s390x x86_64)
<ul>
<li>python311-tornado6-debuginfo-6.3.2-150400.9.27.1</li>
<li>python311-tornado6-6.3.2-150400.9.27.1</li>
<li>python-tornado6-debugsource-6.3.2-150400.9.27.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2023-54397.html">https://www.suse.com/security/cve/CVE-2023-54397.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2024-58384.html">https://www.suse.com/security/cve/CVE-2024-58384.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-91990.html">https://www.suse.com/security/cve/CVE-2026-91990.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-91991.html">https://www.suse.com/security/cve/CVE-2026-91991.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1280689">https://bugzilla.suse.com/show_bug.cgi?id=1280689</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1281059">https://bugzilla.suse.com/show_bug.cgi?id=1281059</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1281439">https://bugzilla.suse.com/show_bug.cgi?id=1281439</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1281440">https://bugzilla.suse.com/show_bug.cgi?id=1281440</a>
</li>
</ul>
</div>