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fix for bug 63362 present in Apache Tomcat 10.1.0-M1 to 10.1.0-M5, 10.0.0-M1 to 10.0.11, 9.0.40 to 9.0.53 and 8.5.60 to 8.5.71 introduced a memory leak. The object introduced to collect metrics for HTTP upgrade connections was not released for WebSocket connections once the connection was closed. This created a memory leak that, over time, could lead to a denial of service via an OutOfMemoryError.","Type":"Description","Title":null},{"CveYear":"2021","CveId":"42340","Ordinal":"2","NoteData":"2021-10-14","Type":"Other","Title":"Published"},{"CveYear":"2021","CveId":"42340","Ordinal":"3","NoteData":"2021-11-12","Type":"Other","Title":"Modified"}]}}}