tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

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...

tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

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...

tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

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...

tomcat: Apache Tomcat: Denial of Service via WebSocket chat example

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...

Uncontrolled Resource Consumption

Apache Tomcat is vulnerable to Uncontrolled Resource Consumption. The vulnerability is due to improper resource management in the WebSocket chat example application, which allows an attacker to consume excessive server resources and potentially cause a denial-of-service condition...

Astra Linux – Vulnerability in Tomcat9

Uncontrolled resource consumption vulnerability in Apache Tomcat’s WebSocket chat example. This issue affects Apache Tomcat versions: 11.0.0-M20 through 11.0.24, 10.1.24 through 10.1.57, and 9.0.89 through 9.0.120. Users who have followed security guidelines to remove example web applications are...

EUVD-2026-74279

n8n: Anonymous Approval-Gate Bypass via Reused resumeToken over the Chat WebSocket...

CVE-2026-86077

n8n is an open source workflow automation platform. Prior to 2.37.7 and 2.38.2, the /chat WebSocket route accepted a resumeToken and resumed a paused execution without checking that the target node supported chat messages. An anonymous form submitter who received that token could reuse it on the...

Amazon Linux 2 : tomcat, --advisory ALAS2TOMCAT9-2026-028 (ALASTOMCAT9-2026-028)

The version of tomcat installed on the remote host is prior to 9.0.121-1. It is, therefore, affected by a vulnerability as referenced in the ALAS2TOMCAT9-2026-028 advisory. Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This issue affects Apache Tomcat:...

Important: tomcat

Issue Overview: 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...

Apache Tomcat 10.1.0.M1 < 10.1.59 multiple vulnerabilities

The version of Tomcat installed on the remote host is prior to 10.1.59. It is, therefore, affected by multiple vulnerabilities as referenced in the fixedinapachetomcat10.1.59security-10 advisory. - Uncontrolled Resource Consumption vulnerability in Apache Tomcat's WebSocket chat example. This iss...

Fixed in Apache Tomcat 10.1.59

Note: The issues below were fixed in Apache Tomcat 10.1.58 but the release vote for the 10.1.58 release candidate did not pass. Therefore, although users must download 10.1.59 to obtain a version that includes a fix for these issues, version 10.1.58 is not included in the list of affected version...

Fixed in Apache Tomcat 9.0.121

Low: Authenticated WebSocket session survives end of HTTP session CVE-2026-73180 If the session ID for an authenticated HTTP session was changed after a WebSocket connection had been established under that authenticated HTTP session, the WebSokcet session would not be closed as required by the...

OESA-2026-3233 tomcat security update

Tomcat is the servlet container that is used in the official Reference Implementation for the Java Servlet and JavaServer Pages technologies. The Java Servlet and JavaServer Pages specifications are developed by Sun under the Java Community Process. Security Fixes: Uncontrolled Resource Consumpti...

K000162737: Apache Tomcat vulnerability CVE-2026-66299

Security Advisory Description 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...

CVE-2026-66299

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...

SUSE CVE-2026-66299

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...

Allocation of Resources Without Limits or Throttling

Overview org.apache.tomcat:tomcat is an implementation of the Java Servlet, JavaServer Pages, Java Expression Language and Java WebSocket technologies. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WebSocket chat example. An attack...

Allocation of Resources Without Limits or Throttling

Overview org.apache.tomcat:tomcat-websocket is a Tomcat WebSocket JSR356 implementation. Affected versions of this package are vulnerable to Allocation of Resources Without Limits or Throttling in the WebSocket chat example. An attacker can exhaust system resources by sending a large number of...

CVE-2026-66299

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...