Observed Memory leak under high traffic condition while using Apache CXF libraries SSL communication

We are using Apache CXF libraries for SSL client implementation in a Spring based application. The client behavior is not stable. We are observing 2 issue:
a) When the load is increased to 20-25 TPS the application processing time increases by 2-3 time.
b) We are experiencing memory leak. Basically the memory consumption is not going down. In the heap dump, we could see lot of Apache CXF Objects.