CVE-2026-66299 (GCVE-0-2026-66299)

Vulnerability from cvelistv5 – Published: 2026-07-28 14:29 – Updated: 2026-07-28 14:29
VLAI
Title
Apache Tomcat: DoS via WebSocket chat example
Summary
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.
Severity
No CVSS data available.
CWE
  • CWE-400 - Uncontrolled Resource Consumption
Assigner
References
Impacted products
Vendor Product Version
Apache Software Foundation Apache Tomcat Affected: 11.0.0-M20 , ≤ 11.0.24 (semver)
Affected: 10.1.24 , ≤ 10.1.57 (semver)
Affected: 9.0.89 , ≤ 9.0.120 (semver)
Unaffected: 0 , ≤ 8.5.100 (semver)
Create a notification for this product.
Credits
4ra1n, pyn3rd and unam4
Show details on NVD website

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Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
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