<div class="container">
<h1>Security update for python-Flask</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:0849-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-03-09T10:13:48Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>moderate</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1258700">bsc#1258700</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-2026-27205.html">CVE-2026-27205</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-2026-27205</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.0</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27205</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:R/S:U/C:H/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27205</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">2.3</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:L/VI:N/VA:N/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-2026-27205</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/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">openSUSE Leap 15.6</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 Server 15 SP7</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 one vulnerability can now be installed.</p>
<h2>Description:</h2>
<p>This update for python-Flask fixes the following issue:</p>
<ul>
<li>CVE-2026-27205: information disclosure due to Flask session not adding the <code>Vary: Cookie</code> header (bsc#1258700).</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">
openSUSE Leap 15.4
<br/>
<code>zypper in -t patch SUSE-2026-849=1</code>
</li>
<li class="list-group-item">
openSUSE Leap 15.6
<br/>
<code>zypper in -t patch openSUSE-SLE-15.6-2026-849=1</code>
</li>
<li class="list-group-item">
Python 3 Module 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Python3-15-SP7-2026-849=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
openSUSE Leap 15.4 (noarch)
<ul>
<li>python311-Flask-2.3.2-150400.3.9.1</li>
<li>python311-Flask-doc-2.3.2-150400.3.9.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.6 (noarch)
<ul>
<li>python311-Flask-2.3.2-150400.3.9.1</li>
<li>python311-Flask-doc-2.3.2-150400.3.9.1</li>
</ul>
</li>
<li>
Python 3 Module 15-SP7 (noarch)
<ul>
<li>python311-Flask-2.3.2-150400.3.9.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27205.html">https://www.suse.com/security/cve/CVE-2026-27205.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1258700">https://bugzilla.suse.com/show_bug.cgi?id=1258700</a>
</li>
</ul>
</div>