SUSE-SU-2026:3424-1: low: Security update for python3-pyOpenSSL
OPENSUSE-SECURITY-UPDATES <[email protected]> Thu, 30 Jul 2026 16:35:58 -0000
| Newsgroups | gmane.linux.suse.security.announce |
|---|---|
| Message-ID | <178542935825.1270.13666250464055061850@cdce4c525ac1> |
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# Security update for python3-pyOpenSSL
Announcement ID: SUSE-SU-2026:3424-1
Release Date: 2026-07-30T11:07:53Z
Rating: low
References:
* bsc#1259804
Cross-References:
* CVE-2026-27448
CVSS scores:
* CVE-2026-27448 ( SUSE ): 6.3
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N
* CVE-2026-27448 ( SUSE ): 3.7 CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N
* CVE-2026-27448 ( NVD ): 1.7
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/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
* CVE-2026-27448 ( NVD ): 5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N
Affected Products:
* Basesystem Module 15-SP7
* openSUSE Leap 15.4
* SUSE Linux Enterprise Desktop 15 SP7
* SUSE Linux Enterprise Micro 5.3
* SUSE Linux Enterprise Micro 5.4
* SUSE Linux Enterprise Micro 5.5
* SUSE Linux Enterprise Micro for Rancher 5.3
* SUSE Linux Enterprise Micro for Rancher 5.4
* SUSE Linux Enterprise Real Time 15 SP7
* SUSE Linux Enterprise Server 15 SP7
* SUSE Linux Enterprise Server for SAP Applications 15 SP7
An update that solves one vulnerability can now be installed.
## Description:
This update for python3-pyOpenSSL fixes the following issue:
* CVE-2026-27448: unhandled exception in `set_tlsext_servername_callback`
callback can result in connection not being cancelled and allows for
possible security measure bypassing (bsc#1259804).
## 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 Micro 5.5
zypper in -t patch SUSE-SLE-Micro-5.5-2026-3424=1
* Basesystem Module 15-SP7
zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-3424=1
* SUSE Linux Enterprise Micro for Rancher 5.3
zypper in -t patch SUSE-SLE-Micro-5.3-2026-3424=1
* SUSE Linux Enterprise Micro 5.3
zypper in -t patch SUSE-SLE-Micro-5.3-2026-3424=1
* SUSE Linux Enterprise Micro for Rancher 5.4
zypper in -t patch SUSE-SLE-Micro-5.4-2026-3424=1
* SUSE Linux Enterprise Micro 5.4
zypper in -t patch SUSE-SLE-Micro-5.4-2026-3424=1
* openSUSE Leap 15.4
zypper in -t patch SUSE-2026-3424=1
## Package List:
* SUSE Linux Enterprise Micro for Rancher 5.3 (noarch)
* python3-pyOpenSSL-21.0.0-150400.22.1
* SUSE Linux Enterprise Micro 5.3 (noarch)
* python3-pyOpenSSL-21.0.0-150400.22.1
* openSUSE Leap 15.4 (noarch)
* python3-pyOpenSSL-21.0.0-150400.22.1
* SUSE Linux Enterprise Micro for Rancher 5.4 (noarch)
* python3-pyOpenSSL-21.0.0-150400.22.1
* SUSE Linux Enterprise Micro 5.4 (noarch)
* python3-pyOpenSSL-21.0.0-150400.22.1
* SUSE Linux Enterprise Micro 5.5 (noarch)
* python3-pyOpenSSL-21.0.0-150400.22.1
* Basesystem Module 15-SP7 (noarch)
* python3-pyOpenSSL-21.0.0-150400.22.1
## References:
* https://www.suse.com/security/cve/CVE-2026-27448.html
* https://bugzilla.suse.com/show_bug.cgi?id=1259804
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<div class="container">
<h1>Security update for python3-pyOpenSSL</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:3424-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-07-30T11:07:53Z</td>
</tr>
<tr>
<th>Rating:</th>
<td>low</td>
</tr>
<tr>
<th>References:</th>
<td>
<ul>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259804">bsc#1259804</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-2026-27448.html">CVE-2026-27448</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-2026-27448</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:N/VI:L/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27448</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">3.7</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27448</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">1.7</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/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-2026-27448</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">5.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/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">Basesystem Module 15-SP7</li>
<li class="list-group-item">openSUSE Leap 15.4</li>
<li class="list-group-item">SUSE Linux Enterprise Desktop 15 SP7</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.3</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.4</li>
<li class="list-group-item">SUSE Linux Enterprise Micro 5.5</li>
<li class="list-group-item">SUSE Linux Enterprise Micro for Rancher 5.3</li>
<li class="list-group-item">SUSE Linux Enterprise Micro for Rancher 5.4</li>
<li class="list-group-item">SUSE Linux Enterprise Real Time 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 python3-pyOpenSSL fixes the following issue:</p>
<ul>
<li>CVE-2026-27448: unhandled exception in <code>set_tlsext_servername_callback</code> callback can result in connection not being
cancelled and allows for possible security measure bypassing (bsc#1259804).</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 Micro 5.5
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.5-2026-3424=1</code>
</li>
<li class="list-group-item">
Basesystem Module 15-SP7
<br/>
<code>zypper in -t patch SUSE-SLE-Module-Basesystem-15-SP7-2026-3424=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro for Rancher 5.3
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.3-2026-3424=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.3
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.3-2026-3424=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro for Rancher 5.4
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.4-2026-3424=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Micro 5.4
<br/>
<code>zypper in -t patch SUSE-SLE-Micro-5.4-2026-3424=1</code>
</li>
<li class="list-group-item">
openSUSE Leap 15.4
<br/>
<code>zypper in -t patch SUSE-2026-3424=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Micro for Rancher 5.3 (noarch)
<ul>
<li>python3-pyOpenSSL-21.0.0-150400.22.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.3 (noarch)
<ul>
<li>python3-pyOpenSSL-21.0.0-150400.22.1</li>
</ul>
</li>
<li>
openSUSE Leap 15.4 (noarch)
<ul>
<li>python3-pyOpenSSL-21.0.0-150400.22.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro for Rancher 5.4 (noarch)
<ul>
<li>python3-pyOpenSSL-21.0.0-150400.22.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.4 (noarch)
<ul>
<li>python3-pyOpenSSL-21.0.0-150400.22.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Micro 5.5 (noarch)
<ul>
<li>python3-pyOpenSSL-21.0.0-150400.22.1</li>
</ul>
</li>
<li>
Basesystem Module 15-SP7 (noarch)
<ul>
<li>python3-pyOpenSSL-21.0.0-150400.22.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27448.html">https://www.suse.com/security/cve/CVE-2026-27448.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1259804">https://bugzilla.suse.com/show_bug.cgi?id=1259804</a>
</li>
</ul>
</div>
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