The 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.
| Package (Ecosystem) | Introduced | Fixed | Limit |
|---|---|---|---|
| org.apache.tomcat:tomcat(Maven) | 10.1.0-M1 | 10.1.0-M6 | N/A |
| org.apache.tomcat:tomcat(Maven) | 10.0.0-M1 | 10.0.12 | N/A |
| org.apache.tomcat:tomcat(Maven) | 9.0.40 | 9.0.54 | N/A |
| org.apache.tomcat:tomcat(Maven) | 8.5.60 | 8.5.72 | N/A |
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