Author: markt
Date: Tue Jul 28 14:23:24 2026
New Revision: 1936671
Log:
Publish details of CVE-2026-66299
Modified:
tomcat/site/trunk/docs/security-10.html
tomcat/site/trunk/docs/security-11.html
tomcat/site/trunk/docs/security-9.html
tomcat/site/trunk/xdocs/security-10.xml
tomcat/site/trunk/xdocs/security-11.xml
tomcat/site/trunk/xdocs/security-9.xml
Modified: tomcat/site/trunk/docs/security-10.html
==============================================================================
--- tomcat/site/trunk/docs/security-10.html Tue Jul 28 13:38:27 2026
(r1936670)
+++ tomcat/site/trunk/docs/security-10.html Tue Jul 28 14:23:24 2026
(r1936671)
@@ -42,14 +42,34 @@
</p>
</div><h3 id="Table_of_Contents">Table of Contents</h3><div class="text">
- <ul><li><a href="#Fixed_in_Apache_Tomcat_10.1.57">Fixed in Apache Tomcat
10.1.57</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.56">Fixed in Apache
Tomcat 10.1.56</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.55">Fixed in
Apache Tomcat 10.1.55</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.54">Fixed in Apache Tomcat
10.1.54</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.53">Fixed in Apache
Tomcat 10.1.53</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.52">Fixed in
Apache Tomcat 10.1.52</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.50">Fixed in Apache Tomcat
10.1.50</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.47">Fixed in Apache
Tomcat 10.1.47</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.45">Fixed in
Apache Tomcat 10.1.45</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.44">Fixed in Apache Tomcat
10.1.44</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.43">Fixed in Apache
Tomcat 10.1.43</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.42">Fixed in
Apache Tomcat 10.1.42</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.41">Fixed in Apache Tomcat
10.1.41</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.40">Fixed in Apache
Tomcat 10.1.40</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.39">Fixed in
Apache Tomcat 10.1.39</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.35">Fixed in Apache Tomcat
10.1.35</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.34">Fixed in Apache
Tomcat 10.1.34</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.33">Fixed in
Apache Tomcat 10.1.33</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.31">Fixed in Apache Tomcat
10.1.31</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.25">Fixed in Apache
Tomcat 10.1.25</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.19">Fixed in
Apache Tomcat 10.1.19</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.16">Fixed in Apache Tomcat
10.1.16</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.14">Fixed in Apache
Tomcat 10.1.14</a></li><li><a href="#Fixed_in_Apache_T
omcat_10.1.13">Fixed in Apache Tomcat 10.1.13</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.9">Fixed in Apache Tomcat
10.1.9</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.8">Fixed in Apache
Tomcat 10.1.8</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.6">Fixed in
Apache Tomcat 10.1.6</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.5">Fixed
in Apache Tomcat 10.1.5</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.2">Fixed in Apache Tomcat
10.1.2</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.1">Fixed in Apache
Tomcat 10.1.1</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.27">Fixed in
Apache Tomcat 10.0.27</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.23">Fixed in Apache Tomcat
10.0.23</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.0-M17">Fixed in
Apache Tomcat 10.1.0-M17</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.21">Fixed in Apache Tomcat
10.0.21</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.0-M15">Fixed in
Apache Tomcat 10.1.0-M15</a></li><li><a h
ref="#Fixed_in_Apache_Tomcat_10.0.20">Fixed in Apache Tomcat
10.0.20</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.0-M14">Fixed in
Apache Tomcat 10.1.0-M14</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.16">Fixed in Apache Tomcat
10.0.16</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.0-M10">Fixed in
Apache Tomcat 10.1.0-M10</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.12">Fixed in Apache Tomcat
10.0.12</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.0-M6">Fixed in Apache
Tomcat 10.1.0-M6</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.7">Fixed in
Apache Tomcat 10.0.7</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.6">Fixed
in Apache Tomcat 10.0.6</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.5">Fixed in Apache Tomcat
10.0.5</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.4">Fixed in Apache
Tomcat 10.0.4</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.2">Fixed in
Apache Tomcat 10.0.2</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.0-M10">Fixed in Apache
Tomcat 10.0.0-M10</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.0-M8">Fixed in Apache Tomcat
10.0.0-M8</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.0-M7">Fixed in
Apache Tomcat 10.0.0-M7</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.0-M6">Fixed in Apache Tomcat
10.0.0-M6</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.0-M5">Fixed in
Apache Tomcat 10.0.0-M5</a></li><li><a
href="#Not_a_vulnerability_in_Tomcat">Not a vulnerability in
Tomcat</a></li></ul>
+ <ul><li><a href="#Fixed_in_Apache_Tomcat_10.1.58">Fixed in Apache Tomcat
10.1.58</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.57">Fixed in Apache
Tomcat 10.1.57</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.56">Fixed in
Apache Tomcat 10.1.56</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.55">Fixed in Apache Tomcat
10.1.55</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.54">Fixed in Apache
Tomcat 10.1.54</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.53">Fixed in
Apache Tomcat 10.1.53</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.52">Fixed in Apache Tomcat
10.1.52</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.50">Fixed in Apache
Tomcat 10.1.50</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.47">Fixed in
Apache Tomcat 10.1.47</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.45">Fixed in Apache Tomcat
10.1.45</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.44">Fixed in Apache
Tomcat 10.1.44</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.43">Fixed in
Apache Tomcat 10.1.43</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.42">Fixed in Apache Tomcat
10.1.42</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.41">Fixed in Apache
Tomcat 10.1.41</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.40">Fixed in
Apache Tomcat 10.1.40</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.39">Fixed in Apache Tomcat
10.1.39</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.35">Fixed in Apache
Tomcat 10.1.35</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.34">Fixed in
Apache Tomcat 10.1.34</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.33">Fixed in Apache Tomcat
10.1.33</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.31">Fixed in Apache
Tomcat 10.1.31</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.25">Fixed in
Apache Tomcat 10.1.25</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.19">Fixed in Apache Tomcat
10.1.19</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.16">Fixed in Apache
Tomcat 10.1.16</a></li><li><a href="#Fixed_in_Apache_T
omcat_10.1.14">Fixed in Apache Tomcat 10.1.14</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.13">Fixed in Apache Tomcat
10.1.13</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.9">Fixed in Apache
Tomcat 10.1.9</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.8">Fixed in
Apache Tomcat 10.1.8</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.6">Fixed
in Apache Tomcat 10.1.6</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.5">Fixed in Apache Tomcat
10.1.5</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.2">Fixed in Apache
Tomcat 10.1.2</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.1">Fixed in
Apache Tomcat 10.1.1</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.27">Fixed in Apache Tomcat
10.0.27</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.23">Fixed in Apache
Tomcat 10.0.23</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.1.0-M17">Fixed
in Apache Tomcat 10.1.0-M17</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.21">Fixed in Apache Tomcat
10.0.21</a></li><li><a href="#
Fixed_in_Apache_Tomcat_10.1.0-M15">Fixed in Apache Tomcat
10.1.0-M15</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.20">Fixed in
Apache Tomcat 10.0.20</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.0-M14">Fixed in Apache Tomcat
10.1.0-M14</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.16">Fixed in
Apache Tomcat 10.0.16</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.0-M10">Fixed in Apache Tomcat
10.1.0-M10</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.12">Fixed in
Apache Tomcat 10.0.12</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.1.0-M6">Fixed in Apache Tomcat
10.1.0-M6</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.7">Fixed in Apache
Tomcat 10.0.7</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.6">Fixed in
Apache Tomcat 10.0.6</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.5">Fixed
in Apache Tomcat 10.0.5</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.4">Fixed in Apache Tomcat
10.0.4</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.2">Fixed in Apache T
omcat 10.0.2</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.0-M10">Fixed in
Apache Tomcat 10.0.0-M10</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.0-M8">Fixed in Apache Tomcat
10.0.0-M8</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.0-M7">Fixed in
Apache Tomcat 10.0.0-M7</a></li><li><a
href="#Fixed_in_Apache_Tomcat_10.0.0-M6">Fixed in Apache Tomcat
10.0.0-M6</a></li><li><a href="#Fixed_in_Apache_Tomcat_10.0.0-M5">Fixed in
Apache Tomcat 10.0.0-M5</a></li><li><a
href="#Not_a_vulnerability_in_Tomcat">Not a vulnerability in
Tomcat</a></li></ul>
+ </div><h3 id="Fixed_in_Apache_Tomcat_10.1.58"><span class="pull-right">not
yet released</span> Fixed in Apache Tomcat 10.1.58</h3><div class="text">
+
+ <p><strong>Low: DoS in WebSocket chat example</strong>
+ <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-66299";
rel="nofollow">CVE-2026-66299</a></p>
+
+ <p>The WebSocket chat example provided an unbounded buffer for undelivered
+ messages. A maliciously slow client could cause the buffer to grow
+ continuously, eventually leading to an memory exhaustion and failure of
+ the Tomcat process.</p>
+
+ <p>This was fixed with commit
+ <a
href="https://github.com/apache/tomcat/commit/446efef55c69b0cabde1f7e582382cb26e651022";>446efef5</a>.</p>
+
+ <p>This issue was reported to the Tomcat security team on 13 July 2026.
+ The issue was made public on 28 July 2026.</p>
+
+ <p>Affects: 10.1.24 to 10.1.57<br>
+ Users who followed the security guidance to remove the examples web
+ application are not affected.</p>
+
</div><h3 id="Fixed_in_Apache_Tomcat_10.1.57"><span
class="pull-right">2026-07-07</span> Fixed in Apache Tomcat 10.1.57</h3><div
class="text">
<p><strong>Low: EncryptInterceptor requirements not clearly
documented</strong>
<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-59084";
rel="nofollow">CVE-2026-59084</a></p>
- <p>The requirements to secuely configure the EncryptInterceptor were not
+ <p>The requirements to securely configure the EncryptInterceptor were not
clearly documented.</p>
<p>This was fixed with commit
Modified: tomcat/site/trunk/docs/security-11.html
==============================================================================
--- tomcat/site/trunk/docs/security-11.html Tue Jul 28 13:38:27 2026
(r1936670)
+++ tomcat/site/trunk/docs/security-11.html Tue Jul 28 14:23:24 2026
(r1936671)
@@ -36,14 +36,34 @@
</p>
</div><h3 id="Table_of_Contents">Table of Contents</h3><div class="text">
- <ul><li><a href="#Fixed_in_Apache_Tomcat_11.0.24">Fixed in Apache Tomcat
11.0.24</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.23">Fixed in Apache
Tomcat 11.0.23</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.22">Fixed in
Apache Tomcat 11.0.22</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.21">Fixed in Apache Tomcat
11.0.21</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.20">Fixed in Apache
Tomcat 11.0.20</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.18">Fixed in
Apache Tomcat 11.0.18</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.15">Fixed in Apache Tomcat
11.0.15</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.12">Fixed in Apache
Tomcat 11.0.12</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.11">Fixed in
Apache Tomcat 11.0.11</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.10">Fixed in Apache Tomcat
11.0.10</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.9">Fixed in Apache
Tomcat 11.0.9</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.8">Fixed in Ap
ache Tomcat 11.0.8</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.7">Fixed
in Apache Tomcat 11.0.7</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.6">Fixed in Apache Tomcat
11.0.6</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.5">Fixed in Apache
Tomcat 11.0.5</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.3">Fixed in
Apache Tomcat 11.0.3</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.2">Fixed
in Apache Tomcat 11.0.2</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.1">Fixed in Apache Tomcat
11.0.1</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.0">Fixed in Apache
Tomcat 11.0.0</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.0-M21">Fixed in
Apache Tomcat 11.0.0-M21</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.0-M17">Fixed in Apache Tomcat
11.0.0-M17</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.0-M12">Fixed in
Apache Tomcat 11.0.0-M12</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.0-M11">Fixed in Apache Tomcat
11.0.0-M11</a></li><li><a href="#Fixed_in_Ap
ache_Tomcat_11.0.0-M6">Fixed in Apache Tomcat 11.0.0-M6</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.0-M5">Fixed in Apache Tomcat
11.0.0-M5</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.0-M3">Fixed in
Apache Tomcat 11.0.0-M3</a></li></ul>
+ <ul><li><a href="#Fixed_in_Apache_Tomcat_11.0.25">Fixed in Apache Tomcat
11.0.25</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.24">Fixed in Apache
Tomcat 11.0.24</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.23">Fixed in
Apache Tomcat 11.0.23</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.22">Fixed in Apache Tomcat
11.0.22</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.21">Fixed in Apache
Tomcat 11.0.21</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.20">Fixed in
Apache Tomcat 11.0.20</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.18">Fixed in Apache Tomcat
11.0.18</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.15">Fixed in Apache
Tomcat 11.0.15</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.12">Fixed in
Apache Tomcat 11.0.12</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.11">Fixed in Apache Tomcat
11.0.11</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.10">Fixed in Apache
Tomcat 11.0.10</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.9">Fixed in
Apache Tomcat 11.0.9</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.8">Fixed in Apache Tomcat
11.0.8</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.7">Fixed in Apache
Tomcat 11.0.7</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.6">Fixed in
Apache Tomcat 11.0.6</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.5">Fixed
in Apache Tomcat 11.0.5</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.3">Fixed in Apache Tomcat
11.0.3</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.2">Fixed in Apache
Tomcat 11.0.2</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.1">Fixed in
Apache Tomcat 11.0.1</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.0">Fixed
in Apache Tomcat 11.0.0</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.0-M21">Fixed in Apache Tomcat
11.0.0-M21</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.0-M17">Fixed in
Apache Tomcat 11.0.0-M17</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.0-M12">Fixed in Apache Tomcat
11.0.0-M12</a></li><li><a href="#Fixed_in_Apache_T
omcat_11.0.0-M11">Fixed in Apache Tomcat 11.0.0-M11</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.0-M6">Fixed in Apache Tomcat
11.0.0-M6</a></li><li><a href="#Fixed_in_Apache_Tomcat_11.0.0-M5">Fixed in
Apache Tomcat 11.0.0-M5</a></li><li><a
href="#Fixed_in_Apache_Tomcat_11.0.0-M3">Fixed in Apache Tomcat
11.0.0-M3</a></li></ul>
+ </div><h3 id="Fixed_in_Apache_Tomcat_11.0.25"><span class="pull-right">not
yet released</span> Fixed in Apache Tomcat 11.0.25</h3><div class="text">
+
+ <p><strong>Low: DoS in WebSocket chat example</strong>
+ <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-66299";
rel="nofollow">CVE-2026-66299</a></p>
+
+ <p>The WebSocket chat example provided an unbounded buffer for undelivered
+ messages. A maliciously slow client could cause the buffer to grow
+ continuously, eventually leading to an memory exhaustion and failure of
+ the Tomcat process.</p>
+
+ <p>This was fixed with commit
+ <a
href="https://github.com/apache/tomcat/commit/4e8e3f8964e9653bab427bf794e026c69ee80f2b";>4e8e3f89</a>.</p>
+
+ <p>This issue was reported to the Tomcat security team on 13 July 2026.
+ The issue was made public on 28 July 2026.</p>
+
+ <p>Affects: 11.0.0-M20 to 11.0.24<br>
+ Users who followed the security guidance to remove the examples web
+ application are not affected.</p>
+
</div><h3 id="Fixed_in_Apache_Tomcat_11.0.24"><span
class="pull-right">2026-07-08</span> Fixed in Apache Tomcat 11.0.24</h3><div
class="text">
<p><strong>Low: EncryptInterceptor requirements not clearly
documented</strong>
<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-59084";
rel="nofollow">CVE-2026-59084</a></p>
- <p>The requirements to secuely configure the EncryptInterceptor were not
+ <p>The requirements to securely configure the EncryptInterceptor were not
clearly documented.</p>
<p>This was fixed with commit
Modified: tomcat/site/trunk/docs/security-9.html
==============================================================================
--- tomcat/site/trunk/docs/security-9.html Tue Jul 28 13:38:27 2026
(r1936670)
+++ tomcat/site/trunk/docs/security-9.html Tue Jul 28 14:23:24 2026
(r1936671)
@@ -36,14 +36,34 @@
</p>
</div><h3 id="Table_of_Contents">Table of Contents</h3><div class="text">
- <ul><li><a href="#Fixed_in_Apache_Tomcat_9.0.120">Fixed in Apache Tomcat
9.0.120</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.119">Fixed in Apache
Tomcat 9.0.119</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.118">Fixed in
Apache Tomcat 9.0.118</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.117">Fixed in Apache Tomcat
9.0.117</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.116">Fixed in Apache
Tomcat 9.0.116</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.115">Fixed in
Apache Tomcat 9.0.115</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.113">Fixed in Apache Tomcat
9.0.113</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.110">Fixed in Apache
Tomcat 9.0.110</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.109">Fixed in
Apache Tomcat 9.0.109</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.108">Fixed in Apache Tomcat
9.0.108</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.107">Fixed in Apache
Tomcat 9.0.107</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.106">Fixed in
Apache Tomcat 9.0.106</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.105">Fixed in Apache Tomcat
9.0.105</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.104">Fixed in Apache
Tomcat 9.0.104</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.102">Fixed in
Apache Tomcat 9.0.102</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.99">Fixed in Apache Tomcat
9.0.99</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.98">Fixed in Apache
Tomcat 9.0.98</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.97">Fixed in
Apache Tomcat 9.0.97</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.96">Fixed
in Apache Tomcat 9.0.96</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.90">Fixed in Apache Tomcat
9.0.90</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.86">Fixed in Apache
Tomcat 9.0.86</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.83">Fixed in
Apache Tomcat 9.0.83</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.81">Fixed
in Apache Tomcat 9.0.81</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.80">Fi
xed in Apache Tomcat 9.0.80</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.75">Fixed in Apache Tomcat
9.0.75</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.74">Fixed in Apache
Tomcat 9.0.74</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.72">Fixed in
Apache Tomcat 9.0.72</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.71">Fixed
in Apache Tomcat 9.0.71</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.69">Fixed in Apache Tomcat
9.0.69</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.68">Fixed in Apache
Tomcat 9.0.68</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.65">Fixed in
Apache Tomcat 9.0.65</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.63">Fixed
in Apache Tomcat 9.0.63</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.62">Fixed in Apache Tomcat
9.0.62</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.58">Fixed in Apache
Tomcat 9.0.58</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.54">Fixed in
Apache Tomcat 9.0.54</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.48">Fix
ed in Apache Tomcat 9.0.48</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.46">Fixed in Apache Tomcat
9.0.46</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.45">Fixed in Apache
Tomcat 9.0.45</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.44">Fixed in
Apache Tomcat 9.0.44</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.43">Fixed
in Apache Tomcat 9.0.43</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.40">Fixed in Apache Tomcat
9.0.40</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.38">Fixed in Apache
Tomcat 9.0.38</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.37">Fixed in
Apache Tomcat 9.0.37</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.36">Fixed
in Apache Tomcat 9.0.36</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.35">Fixed in Apache Tomcat
9.0.35</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.31">Fixed in Apache
Tomcat 9.0.31</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.30">Fixed in
Apache Tomcat 9.0.30</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.29">Fixe
d in Apache Tomcat 9.0.29</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.21">Fixed in Apache Tomcat
9.0.21</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.20">Fixed in Apache
Tomcat 9.0.20</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.19">Fixed in
Apache Tomcat 9.0.19</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.16">Fixed
in Apache Tomcat 9.0.16</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.12">Fixed in Apache Tomcat
9.0.12</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.10">Fixed in Apache
Tomcat 9.0.10</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.9">Fixed in
Apache Tomcat 9.0.9</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.8">Fixed
in Apache Tomcat 9.0.8</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.5">Fixed in Apache Tomcat
9.0.5</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.2">Fixed in Apache
Tomcat 9.0.2</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.1">Fixed in
Apache Tomcat 9.0.1</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M22">Fixed in Apa
che Tomcat 9.0.0.M22</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M21">Fixed in Apache Tomcat
9.0.0.M21</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M19">Fixed in
Apache Tomcat 9.0.0.M19</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M18">Fixed in Apache Tomcat
9.0.0.M18</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M17">Fixed in
Apache Tomcat 9.0.0.M17</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M15">Fixed in Apache Tomcat
9.0.0.M15</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M13">Fixed in
Apache Tomcat 9.0.0.M13</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M10">Fixed in Apache Tomcat
9.0.0.M10</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M8">Fixed in
Apache Tomcat 9.0.0.M8</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M3">Fixed in Apache Tomcat
9.0.0.M3</a></li><li><a href="#Not_a_vulnerability_in_Tomcat">Not a
vulnerability in Tomcat</a></li></ul>
+ <ul><li><a href="#Fixed_in_Apache_Tomcat_9.0.121">Fixed in Apache Tomcat
9.0.121</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.120">Fixed in Apache
Tomcat 9.0.120</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.119">Fixed in
Apache Tomcat 9.0.119</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.118">Fixed in Apache Tomcat
9.0.118</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.117">Fixed in Apache
Tomcat 9.0.117</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.116">Fixed in
Apache Tomcat 9.0.116</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.115">Fixed in Apache Tomcat
9.0.115</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.113">Fixed in Apache
Tomcat 9.0.113</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.110">Fixed in
Apache Tomcat 9.0.110</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.109">Fixed in Apache Tomcat
9.0.109</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.108">Fixed in Apache
Tomcat 9.0.108</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.107">Fixed in
Apache Tomcat 9.0.107</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.106">Fixed in Apache Tomcat
9.0.106</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.105">Fixed in Apache
Tomcat 9.0.105</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.104">Fixed in
Apache Tomcat 9.0.104</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.102">Fixed in Apache Tomcat
9.0.102</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.99">Fixed in Apache
Tomcat 9.0.99</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.98">Fixed in
Apache Tomcat 9.0.98</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.97">Fixed
in Apache Tomcat 9.0.97</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.96">Fixed in Apache Tomcat
9.0.96</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.90">Fixed in Apache
Tomcat 9.0.90</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.86">Fixed in
Apache Tomcat 9.0.86</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.83">Fixed
in Apache Tomcat 9.0.83</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.81">
Fixed in Apache Tomcat 9.0.81</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.80">Fixed in Apache Tomcat
9.0.80</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.75">Fixed in Apache
Tomcat 9.0.75</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.74">Fixed in
Apache Tomcat 9.0.74</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.72">Fixed
in Apache Tomcat 9.0.72</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.71">Fixed in Apache Tomcat
9.0.71</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.69">Fixed in Apache
Tomcat 9.0.69</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.68">Fixed in
Apache Tomcat 9.0.68</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.65">Fixed
in Apache Tomcat 9.0.65</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.63">Fixed in Apache Tomcat
9.0.63</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.62">Fixed in Apache
Tomcat 9.0.62</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.58">Fixed in
Apache Tomcat 9.0.58</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.54">F
ixed in Apache Tomcat 9.0.54</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.48">Fixed in Apache Tomcat
9.0.48</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.46">Fixed in Apache
Tomcat 9.0.46</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.45">Fixed in
Apache Tomcat 9.0.45</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.44">Fixed
in Apache Tomcat 9.0.44</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.43">Fixed in Apache Tomcat
9.0.43</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.40">Fixed in Apache
Tomcat 9.0.40</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.38">Fixed in
Apache Tomcat 9.0.38</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.37">Fixed
in Apache Tomcat 9.0.37</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.36">Fixed in Apache Tomcat
9.0.36</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.35">Fixed in Apache
Tomcat 9.0.35</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.31">Fixed in
Apache Tomcat 9.0.31</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.30">Fi
xed in Apache Tomcat 9.0.30</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.29">Fixed in Apache Tomcat
9.0.29</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.21">Fixed in Apache
Tomcat 9.0.21</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.20">Fixed in
Apache Tomcat 9.0.20</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.19">Fixed
in Apache Tomcat 9.0.19</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.16">Fixed in Apache Tomcat
9.0.16</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.12">Fixed in Apache
Tomcat 9.0.12</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.10">Fixed in
Apache Tomcat 9.0.10</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.9">Fixed
in Apache Tomcat 9.0.9</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.8">Fixed in Apache Tomcat
9.0.8</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.5">Fixed in Apache
Tomcat 9.0.5</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.2">Fixed in
Apache Tomcat 9.0.2</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.1">Fixed
in Apa
che Tomcat 9.0.1</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M22">Fixed
in Apache Tomcat 9.0.0.M22</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M21">Fixed in Apache Tomcat
9.0.0.M21</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M19">Fixed in
Apache Tomcat 9.0.0.M19</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M18">Fixed in Apache Tomcat
9.0.0.M18</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M17">Fixed in
Apache Tomcat 9.0.0.M17</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M15">Fixed in Apache Tomcat
9.0.0.M15</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M13">Fixed in
Apache Tomcat 9.0.0.M13</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M10">Fixed in Apache Tomcat
9.0.0.M10</a></li><li><a href="#Fixed_in_Apache_Tomcat_9.0.0.M8">Fixed in
Apache Tomcat 9.0.0.M8</a></li><li><a
href="#Fixed_in_Apache_Tomcat_9.0.0.M3">Fixed in Apache Tomcat
9.0.0.M3</a></li><li><a href="#Not_a_vulnerability_in_Tomcat">Not a
vulnerability in Tomcat</a></li></u
l>
+ </div><h3 id="Fixed_in_Apache_Tomcat_9.0.121"><span class="pull-right">not
yet released</span> Fixed in Apache Tomcat 9.0.121</h3><div class="text">
+
+ <p><strong>Low: DoS in WebSocket chat example</strong>
+ <a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-66299";
rel="nofollow">CVE-2026-66299</a></p>
+
+ <p>The WebSocket chat example provided an unbounded buffer for undelivered
+ messages. A maliciously slow client could cause the buffer to grow
+ continuously, eventually leading to an memory exhaustion and failure of
+ the Tomcat process.</p>
+
+ <p>This was fixed with commit
+ <a
href="https://github.com/apache/tomcat/commit/f6dda658e4eda2190de96219c182b9a75d27ab06";>f6dda658</a>.</p>
+
+ <p>This issue was reported to the Tomcat security team on 13 July 2026.
+ The issue was made public on 28 July 2026.</p>
+
+ <p>Affects: 9.0.89 to 9.0.120<br>
+ Users who followed the security guidance to remove the examples web
+ application are not affected.</p>
+
</div><h3 id="Fixed_in_Apache_Tomcat_9.0.120"><span
class="pull-right">2026-07-07</span> Fixed in Apache Tomcat 9.0.120</h3><div
class="text">
<p><strong>Low: EncryptInterceptor requirements not clearly
documented</strong>
<a href="http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2026-59084";
rel="nofollow">CVE-2026-59084</a></p>
- <p>The requirements to secuely configure the EncryptInterceptor were not
+ <p>The requirements to securely configure the EncryptInterceptor were not
clearly documented.</p>
<p>This was fixed with commit
Modified: tomcat/site/trunk/xdocs/security-10.xml
==============================================================================
--- tomcat/site/trunk/xdocs/security-10.xml Tue Jul 28 13:38:27 2026
(r1936670)
+++ tomcat/site/trunk/xdocs/security-10.xml Tue Jul 28 14:23:24 2026
(r1936671)
@@ -56,6 +56,28 @@
<toc/>
</section>
+ <section name="Fixed in Apache Tomcat 10.1.58" rtext="not yet released">
+
+ <p><strong>Low: DoS in WebSocket chat example</strong>
+ <cve>CVE-2026-66299</cve></p>
+
+ <p>The WebSocket chat example provided an unbounded buffer for undelivered
+ messages. A maliciously slow client could cause the buffer to grow
+ continuously, eventually leading to an memory exhaustion and failure of
+ the Tomcat process.</p>
+
+ <p>This was fixed with commit
+ <hashlink hash="446efef55c69b0cabde1f7e582382cb26e651022"/>.</p>
+
+ <p>This issue was reported to the Tomcat security team on 13 July 2026.
+ The issue was made public on 28 July 2026.</p>
+
+ <p>Affects: 10.1.24 to 10.1.57<br/>
+ Users who followed the security guidance to remove the examples web
+ application are not affected.</p>
+
+ </section>
+
<section name="Fixed in Apache Tomcat 10.1.57" rtext="2026-07-07">
<p><strong>Low: EncryptInterceptor requirements not clearly
Modified: tomcat/site/trunk/xdocs/security-11.xml
==============================================================================
--- tomcat/site/trunk/xdocs/security-11.xml Tue Jul 28 13:38:27 2026
(r1936670)
+++ tomcat/site/trunk/xdocs/security-11.xml Tue Jul 28 14:23:24 2026
(r1936671)
@@ -50,6 +50,28 @@
<toc/>
</section>
+ <section name="Fixed in Apache Tomcat 11.0.25" rtext="not yet released">
+
+ <p><strong>Low: DoS in WebSocket chat example</strong>
+ <cve>CVE-2026-66299</cve></p>
+
+ <p>The WebSocket chat example provided an unbounded buffer for undelivered
+ messages. A maliciously slow client could cause the buffer to grow
+ continuously, eventually leading to an memory exhaustion and failure of
+ the Tomcat process.</p>
+
+ <p>This was fixed with commit
+ <hashlink hash="4e8e3f8964e9653bab427bf794e026c69ee80f2b"/>.</p>
+
+ <p>This issue was reported to the Tomcat security team on 13 July 2026.
+ The issue was made public on 28 July 2026.</p>
+
+ <p>Affects: 11.0.0-M20 to 11.0.24<br/>
+ Users who followed the security guidance to remove the examples web
+ application are not affected.</p>
+
+ </section>
+
<section name="Fixed in Apache Tomcat 11.0.24" rtext="2026-07-08">
<p><strong>Low: EncryptInterceptor requirements not clearly
Modified: tomcat/site/trunk/xdocs/security-9.xml
==============================================================================
--- tomcat/site/trunk/xdocs/security-9.xml Tue Jul 28 13:38:27 2026
(r1936670)
+++ tomcat/site/trunk/xdocs/security-9.xml Tue Jul 28 14:23:24 2026
(r1936671)
@@ -50,6 +50,28 @@
<toc/>
</section>
+ <section name="Fixed in Apache Tomcat 9.0.121" rtext="not yet released">
+
+ <p><strong>Low: DoS in WebSocket chat example</strong>
+ <cve>CVE-2026-66299</cve></p>
+
+ <p>The WebSocket chat example provided an unbounded buffer for undelivered
+ messages. A maliciously slow client could cause the buffer to grow
+ continuously, eventually leading to an memory exhaustion and failure of
+ the Tomcat process.</p>
+
+ <p>This was fixed with commit
+ <hashlink hash="f6dda658e4eda2190de96219c182b9a75d27ab06"/>.</p>
+
+ <p>This issue was reported to the Tomcat security team on 13 July 2026.
+ The issue was made public on 28 July 2026.</p>
+
+ <p>Affects: 9.0.89 to 9.0.120<br/>
+ Users who followed the security guidance to remove the examples web
+ application are not affected.</p>
+
+ </section>
+
<section name="Fixed in Apache Tomcat 9.0.120" rtext="2026-07-07">
<p><strong>Low: EncryptInterceptor requirements not clearly
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