<div class="container">
<h1>Security update for dovecot24</h1>
<table class="table table-striped table-bordered">
<tbody>
<tr>
<th>Announcement ID:</th>
<td>SUSE-SU-2026:21208-1</td>
</tr>
<tr>
<th>Release Date:</th>
<td>2026-04-16T13:10:27Z</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=1260893">bsc#1260893</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260894">bsc#1260894</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260895">bsc#1260895</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260896">bsc#1260896</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260897">bsc#1260897</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260898">bsc#1260898</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260899">bsc#1260899</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260900">bsc#1260900</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260901">bsc#1260901</a>
</li>
<li style="display: inline;">
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260902">bsc#1260902</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-2025-59028.html">CVE-2025-59028</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-59031.html">CVE-2025-59031</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2025-59032.html">CVE-2025-59032</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-24031.html">CVE-2026-24031</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27855.html">CVE-2026-27855</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27856.html">CVE-2026-27856</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27857.html">CVE-2026-27857</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27858.html">CVE-2026-27858</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27859.html">CVE-2026-27859</a>
</li>
<li style="display: inline;">
<a href="https://www.suse.com/security/cve/CVE-2026-27860.html">CVE-2026-27860</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-2025-59028</span>
<span class="cvss-source">
(
SUSE
):
</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:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-59028</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:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-59031</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-59031</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-59031</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:L/UI:N/S:U/C:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-59032</span>
<span class="cvss-source">
(
SUSE
):
</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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2025-59032</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-2025-59032</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-2026-24031</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">9.2</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-24031</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.7</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-24031</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.7</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27855</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.6</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27855</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27855</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">6.8</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27856</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">9.1</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27856</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">7.4</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27856</span>
<span class="cvss-source">
(
NVD
):
</span>
<span class="cvss-score">7.4</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27857</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27857</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">4.3</span>
<span class="cvss-vector">CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27857</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:L/UI:N/S:U/C:N/I:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27858</span>
<span class="cvss-source">
(
SUSE
):
</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</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27858</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-2026-27858</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-2026-27859</span>
<span class="cvss-source">
(
SUSE
):
</span>
<span class="cvss-score">6.9</span>
<span class="cvss-vector">CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27859</span>
<span class="cvss-source">
(
SUSE
):
</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:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27859</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:N/A:L</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27860</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:L/VI:N/VA:N/SC:N/SI:N/SA:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27860</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:L/I:N/A:N</span>
</li>
<li class="list-group-item">
<span class="cvss-reference">CVE-2026-27860</span>
<span class="cvss-source">
(
NVD
):
</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: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">SUSE Linux Enterprise Server 16.0</li>
<li class="list-group-item">SUSE Linux Enterprise Server for SAP applications 16.0</li>
</ul>
</td>
</tr>
</tbody>
</table>
<p>An update that solves 10 vulnerabilities can now be installed.</p>
<h2>Description:</h2>
<p>This update for dovecot24 fixes the following issues:</p>
<ul>
<li>Update to v2.4.3</li>
<li>CVE-2025-59028: Invalid base64 authentication can cause DoS for other logins (bsc#1260894).</li>
<li>CVE-2025-59031: decode2text.sh OOXML extraction may follow symlinks and read unintended files during indexing
(bsc#1260895).</li>
<li>CVE-2025-59032: pigeonhole: ManageSieve panic occurs with sieve-connect as a client (bsc#1260902).</li>
<li>CVE-2026-24031: SQL injection possible if auth_username_chars is configured empty. Fixed escaping to always happen.
v2.4 regression (bsc#1260896).</li>
<li>CVE-2026-27855: OTP driver vulnerable to replay attack (bsc#1260900).</li>
<li>CVE-2026-27856: Doveadm credentials were not checked using timing-safe checking function (bsc#1260899).</li>
<li>CVE-2026-27857: sending excessive parenthesis causes imap-login to use excessive memory (bsc#1260898).</li>
<li>CVE-2026-27858: pigeonhole: managesieve-login can allocate large amount of memory during authentication (bsc#1260901).</li>
<li>CVE-2026-27859: excessive RFC 2231 MIME parameters in email would can excessive CPU usage (bsc#1260897).</li>
<li>CVE-2026-27860: LDAP query injection possible if auth_username_chars is configured empty. Fixed escaping to always
happen. v2.4 regression (bsc#1260893).</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 16.0
<br/>
<code>zypper in -t patch SUSE-SLES-16.0-577=1</code>
</li>
<li class="list-group-item">
SUSE Linux Enterprise Server for SAP applications 16.0
<br/>
<code>zypper in -t patch SUSE-SLES-16.0-577=1</code>
</li>
</ul>
<h2>Package List:</h2>
<ul>
<li>
SUSE Linux Enterprise Server 16.0 (aarch64 ppc64le s390x x86_64)
<ul>
<li>dovecot24-fts-solr-2.4.3-160000.1.1</li>
<li>dovecot24-fts-solr-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-debugsource-2.4.3-160000.1.1</li>
<li>dovecot24-backend-mysql-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-backend-pgsql-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-backend-sqlite-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-devel-2.4.3-160000.1.1</li>
<li>dovecot24-fts-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-backend-pgsql-2.4.3-160000.1.1</li>
<li>dovecot24-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-fts-2.4.3-160000.1.1</li>
<li>dovecot24-2.4.3-160000.1.1</li>
<li>dovecot24-backend-mysql-2.4.3-160000.1.1</li>
<li>dovecot24-backend-sqlite-2.4.3-160000.1.1</li>
</ul>
</li>
<li>
SUSE Linux Enterprise Server for SAP applications 16.0 (ppc64le x86_64)
<ul>
<li>dovecot24-fts-solr-2.4.3-160000.1.1</li>
<li>dovecot24-fts-solr-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-debugsource-2.4.3-160000.1.1</li>
<li>dovecot24-backend-mysql-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-backend-pgsql-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-backend-sqlite-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-devel-2.4.3-160000.1.1</li>
<li>dovecot24-fts-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-backend-pgsql-2.4.3-160000.1.1</li>
<li>dovecot24-debuginfo-2.4.3-160000.1.1</li>
<li>dovecot24-fts-2.4.3-160000.1.1</li>
<li>dovecot24-2.4.3-160000.1.1</li>
<li>dovecot24-backend-mysql-2.4.3-160000.1.1</li>
<li>dovecot24-backend-sqlite-2.4.3-160000.1.1</li>
</ul>
</li>
</ul>
<h2>References:</h2>
<ul>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-59028.html">https://www.suse.com/security/cve/CVE-2025-59028.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-59031.html">https://www.suse.com/security/cve/CVE-2025-59031.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2025-59032.html">https://www.suse.com/security/cve/CVE-2025-59032.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-24031.html">https://www.suse.com/security/cve/CVE-2026-24031.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27855.html">https://www.suse.com/security/cve/CVE-2026-27855.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27856.html">https://www.suse.com/security/cve/CVE-2026-27856.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27857.html">https://www.suse.com/security/cve/CVE-2026-27857.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27858.html">https://www.suse.com/security/cve/CVE-2026-27858.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27859.html">https://www.suse.com/security/cve/CVE-2026-27859.html</a>
</li>
<li>
<a href="https://www.suse.com/security/cve/CVE-2026-27860.html">https://www.suse.com/security/cve/CVE-2026-27860.html</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260893">https://bugzilla.suse.com/show_bug.cgi?id=1260893</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260894">https://bugzilla.suse.com/show_bug.cgi?id=1260894</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260895">https://bugzilla.suse.com/show_bug.cgi?id=1260895</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260896">https://bugzilla.suse.com/show_bug.cgi?id=1260896</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260897">https://bugzilla.suse.com/show_bug.cgi?id=1260897</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260898">https://bugzilla.suse.com/show_bug.cgi?id=1260898</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260899">https://bugzilla.suse.com/show_bug.cgi?id=1260899</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260900">https://bugzilla.suse.com/show_bug.cgi?id=1260900</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260901">https://bugzilla.suse.com/show_bug.cgi?id=1260901</a>
</li>
<li>
<a href="https://bugzilla.suse.com/show_bug.cgi?id=1260902">https://bugzilla.suse.com/show_bug.cgi?id=1260902</a>
</li>
</ul>
</div>