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id="mainRight"><div id="content"><h2 style="display: none;">Content</h2><h3 id="Table_of_Contents">Table of Contents</h3><div class="text"> |
| <ul><li><a href="#Apache_Tomcat_APR/native_Connector_vulnerabilities">Apache Tomcat APR/native Connector vulnerabilities</a></li><li><a href="#Fixed_in_Apache_Tomcat_Native_Connector_2.0.14_/_1.3.7">Fixed in Apache Tomcat Native Connector 2.0.14 / 1.3.7</a></li><li><a href="#Fixed_in_Apache_Tomcat_Native_Connector_2.0.12_/_1.3.5">Fixed in Apache Tomcat Native Connector 2.0.12 / 1.3.5</a></li><li><a href="#Fixed_in_Apache_Tomcat_Native_Connector_1.2.17">Fixed in Apache Tomcat Native Connector 1.2.17</a></li><li><a href="#Fixed_in_Apache_Tomcat_Native_Connector_1.2.16">Fixed in Apache Tomcat Native Connector 1.2.16</a></li><li><a href="#Not_a_vulnerability_in_the_Apache_Tomcat_APR/native_Connector">Not a vulnerability in the Apache Tomcat APR/native Connector</a></li></ul> |
| </div><h3 id="Apache_Tomcat_APR/native_Connector_vulnerabilities">Apache Tomcat APR/native Connector vulnerabilities</h3><div class="text"> |
| <p>This page lists all security vulnerabilities fixed in released versions |
| of Apache Tomcat APR/native Connector. Each vulnerability is given a |
| <a href="security-impact.html">security impact rating</a> by the Apache |
| Tomcat<sup>®</sup> security team — please note that this rating may vary from |
| platform to platform. We also list the versions of Apache Tomcat APR/native |
| Connectors the flaw is known to affect, and where a flaw has not been |
| verified list the version with a question mark.</p> |
| |
| <p><strong>Note:</strong> Vulnerabilities that are not Tomcat vulnerabilities |
| but have either been incorrectly reported against Tomcat or where Tomcat |
| provides a workaround are listed at the end of this page.</p> |
| |
| <p>This page has been created from a review of the Apache Tomcat archives |
| and the CVE list. Please send comments or corrections for these |
| vulnerabilities to the <a href="security.html">Tomcat |
| Security Team</a>.</p> |
| |
| </div><h3 id="Fixed_in_Apache_Tomcat_Native_Connector_2.0.14_/_1.3.7">Fixed in Apache Tomcat Native Connector 2.0.14 / 1.3.7</h3><div class="text"> |
| |
| <p><strong>Moderate: OCSP checks sometimes soft-fail even when soft-fail is |
| disabled</strong> |
| <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-29145" rel="nofollow">CVE-2026-29145</a></p> |
| |
| <p>CLIENT_CERT authentication did not fail OCSP checks as expected for some |
| scenarios when soft fail was disabled.</p> |
| |
| <p>This was fixed with commit |
| <a href="https://github.com/apache/tomcat-native/commit/bcea0ac214cae14fd1c2517d759a72465cfc62d3">bcea0ac2</a> |
| ()2.0.x) and |
| <a href="https://github.com/apache/tomcat-native/commit/204f7f8a09adffce7ad02998dbc902f2b8c87253">204f7f8a</a> |
| (1.3.x).</p> |
| |
| <p>This issue was reported to the Tomcat security team on 26 February 2026. |
| The issue was made public on 9 April 2026.</p> |
| |
| <p>Affects: 1.3.0 to 1.3.6 and 2.0.0 to 2.0.13</p> |
| |
| </div><h3 id="Fixed_in_Apache_Tomcat_Native_Connector_2.0.12_/_1.3.5">Fixed in Apache Tomcat Native Connector 2.0.12 / 1.3.5</h3><div class="text"> |
| |
| <p><strong>Moderate: Incomplete OCSP verification checks</strong> |
| <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-24734" rel="nofollow">CVE-2026-24734</a></p> |
| |
| <p>When using an OCSP responder, Tomcat Native did complete verification or |
| freshness checks on the OCSP response which could allow certificate |
| revocation to be bypassed.</p> |
| |
| <p>This issue was reported to the Tomcat security team on 2 November 2025. |
| The issue was made public on 17 February 2026.</p> |
| |
| <p>Affects: 1.3.0 to 1.3.4 and 2.0.0 to 2.0.11</p> |
| |
| </div><h3 id="Fixed_in_Apache_Tomcat_Native_Connector_1.2.17">Fixed in Apache Tomcat Native Connector 1.2.17</h3><div class="text"> |
| |
| <p><strong>Moderate: Mishandled OCSP invalid response</strong> |
| <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8019" rel="nofollow">CVE-2018-8019</a></p> |
| <p>When using an OCSP responder Tomcat Native did not correctly handle |
| invalid responses. This allowed for revoked client certificates to |
| be incorrectly identified. It was therefore possible for users to |
| authenticate with revoked certificates when using mutual TLS.</p> |
| |
| <p>This was fixed in revision <a href="https://svn.apache.org/viewvc?view=rev&rev=1832832">1832832</a>.</p> |
| |
| <p>Affects: 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34</p> |
| |
| <p><strong>Important: Mishandled OCSP responses can allow clients to |
| authenticate with revoked certificates</strong> |
| <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2018-8020" rel="nofollow">CVE-2018-8020</a></p> |
| |
| <p>Apache Tomcat Native has a flaw that does not properly check OCSP |
| pre-produced responses, which are lists (multiple entries) of |
| certificate statuses. Subsequently, revoked client certificates may not be |
| properly identified, allowing for users to authenticate with revoked |
| certicates to connections that require mutual TLS.</p> |
| |
| <p>This was fixed in revision <a href="https://svn.apache.org/viewvc?view=rev&rev=1832863">1832863</a>.</p> |
| |
| <p>Affects: 1.2.0 to 1.2.16 and 1.1.23 to 1.1.34</p> |
| |
| </div><h3 id="Fixed_in_Apache_Tomcat_Native_Connector_1.2.16">Fixed in Apache Tomcat Native Connector 1.2.16</h3><div class="text"> |
| |
| <p><i>Note: The issue below was fixed in Apache Tomcat Native Connector |
| 1.2.15 but the release vote for the 1.2.15 release candidate did not |
| pass. Therefore, although users must download 1.2.16 to obtain a version |
| that includes the fix for this issue, version 1.2.15 is not included in |
| the list of affected versions.</i></p> |
| |
| <p><strong>Moderate: OCSP check omitted</strong> |
| <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2017-15698" rel="nofollow">CVE-2017-15698</a></p> |
| |
| <p>When parsing the AIA-Extension field of a client certificate, the Apache |
| Tomcat Native Connector did not correctly handle fields longer than 127 |
| bytes. The result of the parsing error was to skip the OCSP check. It was |
| therefore possible for client certificates that should have been rejected |
| (if the OCSP check had been made) to be accepted. Users not using OCSP |
| checks are not affected by this vulnerability. |
| </p> |
| |
| <p>This was fixed in revisions <a href="https://svn.apache.org/viewvc?view=rev&rev=1815200">1815200</a> and |
| <a href="https://svn.apache.org/viewvc?view=rev&rev=1815218">1815218</a>.</p> |
| |
| <p>This issue was reported to the Apache Tomcat Security Team by Jonas |
| Klempel on 6 November 2017 and made public on 31 January 2018.</p> |
| |
| <p>Affects: 1.2.0 to 1.2.14 and 1.1.23 to 1.1.34</p> |
| |
| </div><h3 id="Not_a_vulnerability_in_the_Apache_Tomcat_APR/native_Connector">Not a vulnerability in the Apache Tomcat APR/native Connector</h3><div class="text"> |
| <p><strong>TLS SSL Man In The Middle</strong> |
| <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555" rel="nofollow">CVE-2009-3555</a></p> |
| |
| <p>A vulnerability exists in the TLS protocol that allows an attacker to |
| inject arbitrary requests into an TLS stream during renegotiation.</p> |
| |
| <p>The TLS implementation used by Tomcat varies with connector. The |
| APR/native connector uses OpenSSL.</p> |
| |
| <p>The APR/native connector is vulnerable if the OpenSSL version used is |
| vulnerable. Note: Building with OpenSSL 0.9.8l will disable all |
| renegotiation and protect against this vulnerability.</p> |
| |
| <p>From 1.1.18 onwards, client initiated renegotiations are rejected to |
| provide partial protection against this vulnerability with any OpenSSL |
| version.</p> |
| |
| <p>Users should be aware that the impact of disabling renegotiation will |
| vary with both application and client. In some circumstances disabling |
| renegotiation may result in some clients being unable to access the |
| application.</p> |
| |
| <p><strong>Important: Remote Memory Read</strong> |
| <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2014-0160" rel="nofollow">CVE-2014-0160</a> (a.k.a. "Heartbleed")</p> |
| |
| <p>A bug in certain versions of <a href="www.openssl.org">OpenSSL</a> |
| can allow an unauthenticated remote user to read certain contents of |
| the server's memory. Binary versions of tcnative 1.1.24 - 1.1.29 |
| include this vulnerable version of OpenSSL. tcnative 1.1.30 and later |
| ship with patched versions of OpenSSL.</p> |
| |
| <p>This issue was first announced on 7 April 2014.</p> |
| |
| <p>Affects: OpenSSL 1.0.1-1.0.1f, tcnative 1.1.24-1.1.29</p> |
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