CVE-2026-68763
Severity CVSS v4.0:
Pending analysis
Type:
CWE-400
Uncontrolled Resource Consumption ('Resource Exhaustion')
Publication date:
25/08/2026
Last modified:
27/08/2026
Description
Uncontrolled Resource Consumption vulnerability in Apache Tomcat via an allocation leak in the HTTP/2 backlog tracking when a stream is reset<br />
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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.<br />
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The following versions were EOL at the time the CVE was created but are <br />
known to be affected: from 8.5.59 through 8.5.100. Other unsupported versions may also be affected.<br />
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Users are recommended to upgrade to version 11.0.25, 10.1.58 or 9.0.121, which fix the issue.
Impact
Base Score 3.x
7.50
Severity 3.x
HIGH
Vulnerable products and versions
| CPE | From | Up to |
|---|---|---|
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 8.5.59 (including) | 9.0.121 (excluding) |
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 10.1.0 (including) | 10.1.58 (excluding) |
| cpe:2.3:a:apache:tomcat:*:*:*:*:*:*:*:* | 11.0.0 (including) | 11.0.25 (excluding) |
To consult the complete list of CPE names with products and versions, see this page