CVE-2024-34750: Apache Tomcat

High severity, CVSS 7.5. EPSS: 4.6% chance of exploitation in the next 30 days.

Improper Handling of Exceptional Conditions, Uncontrolled Resource Consumption vulnerability in Apache Tomcat. When processing an HTTP/2 stream, Tomcat did not handle some cases of excessive HTTP headers correctly. This led to a miscounting of active HTTP/2 streams which in turn led to the use of an incorrect infinite timeout which allowed connections to remain open which should have been closed. This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.0-M20, from 10.1.0-M1 through 10.1.24, from 9.0.0-M1 through 9.0.89. The following versions were EOL at the time the CVE was created but are known to be affected: 8.5.0 though 8.5.100. Other EOL versions may also be affected. Users are recommended to upgrade to version 11.0.0-M21, 10.1.25 or 9.0.90, which fixes the issue.

Affected products

• Apache Tomcat: from 9.0.0, before 9.0.90 (fixed in 9.0.90); from 10.1.0, before 10.1.25 (fixed in 10.1.25); version 11.0.0 only
• Netapp Ontap Tools: version 9 only

Published 2024-07-03. Last modified 2026-06-17.