<div class="container">
<h1>Security update for haproxy</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:21353-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-04-23T08:06:25Z</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=1261626">bsc#1261626</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1262103">bsc#1262103</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-2026-33555.html">CVE-2026-33555</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-2026-33555</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.3</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:L/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33555</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.0</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-33555</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">4.0</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:N/I:L/A:N</span>
</li>
</ul>
</td>
</tr>
<tr>
<th>Affected Products:</th>
<td>
<ul class="list-group">
<li class="list-group-item">SUSE Linux Enterprise Server High Availability Extension 16.0</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves one vulnerability and has one fix can now be installed.</p>
<h2>Description:</h2>
<p>This update for haproxy fixes the following issues:</p>
<p>Security issue:</p>
<ul>
<li>CVE-2026-33555: Request smuggling via HTTP/3 parser desynchronization (bsc#1262103).</li>
<li>bug in SLZ compression (bsc#1261626).</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 High Availability Extension 16.0
<br/>
<code>zypper in -t patch SUSE-SLES-HA-16.0-632=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Server High Availability Extension 16.0 (ppc64le s390x x86_64)
<ul>
<li>haproxy-3.2.15+git64.0fc44b458-160000.2.1</li>
<li>haproxy-debugsource-3.2.15+git64.0fc44b458-160000.2.1</li>
<li>haproxy-debuginfo-3.2.15+git64.0fc44b458-160000.2.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-33555.html">https://www.suse.com/security/cve/CVE-2026-33555.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1261626">https://bugzilla.suse.com/show_bug.cgi?id=1261626</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1262103">https://bugzilla.suse.com/show_bug.cgi?id=1262103</a>
</li>
</ul>
</div>