Allocation of Resources Without Limits or Throttling Affecting tomcat11 package, versions <0:11.0.25-0.1.hum1


Severity

Recommended
0.0
medium
0
10

Based on Red Hat Enterprise Linux security rating.

Threat Intelligence

EPSS
0.45% (37th percentile)

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  • Snyk IDSNYK-RHEL10-TOMCAT11-18513255
  • published4 Aug 2026
  • disclosed28 Jul 2026

Introduced: 28 Jul 2026

NewCVE-2026-66299  (opens in a new tab)
CWE-770  (opens in a new tab)

How to fix?

Upgrade RHEL:10 tomcat11 to version 0:11.0.25-0.1.hum1 or higher.
This issue was patched in RHSA-2026:56039.

NVD Description

Note: Versions mentioned in the description apply only to the upstream tomcat11 package and not the tomcat11 package as distributed by RHEL. See How to fix? for RHEL:10 relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1