{"schema_version":"1.7.5","id":"GHSA-53hp-jpwq-2jgq","published":"2022-02-09T23:01:22Z","modified":"2026-06-11T14:45:08.723638939Z","aliases":["BIT-tomcat-2020-11996","CVE-2020-11996"],"summary":"Uncontrolled Resource Consumption in Apache Tomcat","details":"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.","affected":[{"package":{"name":"org.apache.tomcat:tomcat","ecosystem":"Maven","purl":"pkg:maven/org.apache.tomcat/tomcat"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"10.0.0-M1"},{"fixed":"10.0.0-M5"}]}],"versions":["10.0.0-M1","10.0.0-M3","10.0.0-M4"],"database_specific":{"last_known_affected_version_range":"<= 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