A specially crafted sequence of HTTP/2 requests sent to Apache Tomcat 10.0.0-M1 to 10.0.0-M5, 9.0.0.M1 to 9.0.35 and 8.5.0 to 8.5.55 could trigger high CPU usage for several seconds. If a sufficient number of such requests were made on concurrent HTTP/2 connections, the server could become unresponsive.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| org.apache.tomcat:tomcat(Maven) | 10.0.0-M1 | 10.0.0-M5 | N/A |
| org.apache.tomcat:tomcat(Maven) | 9.0.0.M1 | 9.0.35 | N/A |
| org.apache.tomcat:tomcat(Maven) | 8.5.0 | 8.5.55 | N/A |
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