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.
Analysis and contextual insights are available on OpenCVE Cloud.
No vendor fix or workaround currently provided.
Additional remediation guidance may be available on OpenCVE Cloud.
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Tue, 28 Jul 2026 18:30:00 +0000
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Tue, 28 Jul 2026 16:15:00 +0000
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| 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 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. | |
| Title | Apache Tomcat: DoS via WebSocket chat example | |
| Weaknesses | CWE-400 | |
| References |
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Subscriptions
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Status: PUBLISHED
Assigner: apache
Published:
Updated: 2026-07-28T17:40:03.853Z
Reserved: 2026-07-24T14:53:11.561Z
Link: CVE-2026-66299
Updated: 2026-07-28T17:31:30.996Z
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OpenCVE Enrichment
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CWE-400
Uncontrolled Resource Consumption