Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset
This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.24, from 10.1.0-M1 through 10.1.57, from 9.0.39 through 9.0.120.
The following versions were EOL at the time the CVE was created but are known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.
Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
CVSS Details
- CVSS 3.1 Base Score: 7.5
- CVSS 3.1 Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)
Covered by Rapid7
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Apache Tomcat | — | Upgrade Apache Tomcat to 9.0.121Upgrade Apache Tomcat to 10.1.59Upgrade Apache Tomcat to 11.0.25Upgrade Apache Tomcat to the latest available version | Aug 26, 2026 | Aug 25, 2026 |
| Atlassian Jira | — | Upgrade to the latest version of Atlassian JIRA | Sep 16, 2026 | Sep 15, 2026 |
| Debian | — | Upgrade tomcat9 | Aug 27, 2026 | Aug 27, 2026 |
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