Логотип exploitDog
Консоль
Логотип exploitDog

exploitDog

redhat логотип

CVE-2026-66299

Опубликовано: 28 июл. 2026
Источник: redhat
CVSS3: 5.3

Описание

Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue. Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue.

A flaw was found in Apache Tomcat. This uncontrolled resource consumption vulnerability, located in the WebSocket chat example, allows a remote attacker to cause a Denial of Service (DoS) by exhausting system resources. This can lead to the affected system becoming unresponsive or crashing.

Отчет

This Moderate severity flaw in Apache Tomcat's WebSocket chat example could lead to a denial of service. The impact is limited as the vulnerable component is part of an example application, which is generally not deployed in production environments. Exploitation requires the example application to be present and accessible.

Меры по смягчению последствий

To mitigate this vulnerability, remove the examples web application from your Apache Tomcat installation. This can typically be achieved by deleting the examples directory or examples.war file from the webapps directory of your Tomcat installation. A restart of the Tomcat service may be required for the changes to take full effect.

Затронутые пакеты

ПлатформаПакетСостояниеРекомендацияРелиз
Red Hat Enterprise Linux 10tomcatFix deferred
Red Hat Enterprise Linux 10tomcat9Fix deferred
Red Hat Enterprise Linux 6tomcat6Not affected
Red Hat Enterprise Linux 7tomcatNot affected
Red Hat Enterprise Linux 8pki-servlet-engineFix deferred
Red Hat Enterprise Linux 8tomcatFix deferred
Red Hat Enterprise Linux 9tomcatFix deferred
Red Hat Hardened Imagestomcat10Affected
Red Hat JBoss Web Server 5jws5-tomcatNot affected
Red Hat JBoss Web Server 6jws6-tomcatNot affected

Показывать по

Дополнительная информация

Статус:

Moderate
Дефект:
CWE-770
https://bugzilla.redhat.com/show_bug.cgi?id=2508085tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

5.3 Medium

CVSS3

Связанные уязвимости

CVSS3: 7.5
ubuntu
около 2 месяцев назад

Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue. Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue.

CVSS3: 7.5
nvd
около 2 месяцев назад

Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue. Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue.

CVSS3: 7.5
debian
около 2 месяцев назад

Uncontrolled Resource Consumption vulnerability in Apache Tomcat's Web ...

CVSS3: 7.5
github
около 2 месяцев назад

Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache Tomcat: from 11.0.0-M20 through 11.0.24, from 10.1.24 through 10.1.57, from 9.0.89 through 9.0.120. Users who have followed the security guidance to remove the examples web application are not affected by this issue. Users are recommended to remove the examples web application or to upgrade to version 11.0.25, 10.1.58 or 9.0.121 (when released), which fix the issue.

5.3 Medium

CVSS3