
Updated the XStream library to version 1.4.11.1.Updated the Wowza Streaming Engine Manager Tomcat web.xml file to use the default HTTP Header Security Filter.This was accidentally removed in Wowza Streaming Engine 4.7.8. Restored the leading forward slash in responses to Request.getRequestURI() in the Wowza Streaming Engine Java API.This restores the functionality of the ModuleStreamResolver module. These were accidentally removed in Wowza Streaming Engine 4.7.8. Restored HttpStreamerItem.getLiveStreamPacketizer() and HttpStreamerItem.getLiveStreamRepeater() in the Wowza Streaming Engine Java API.Fixed several security vulnerabilities in Wowza Streaming Engine Manager.Fixed a Java non-heap memory leak with the creation and destruction of the thumbnailer.Fixed an issue that caused uninitialized memory to be returned to users if a thumbnail was requested for an incomplete frame.Fixed an issue with restarting long-running source streams that could trigger a memory leak in the MPEG-DASH and CMAF live packetizers.

Below is change lists from Wowza Streaming Engine 4.8.0 Release Notes Detailed list of changes in Wowza Streaming Engine 4.8.0 Changes since 4.7.8 release
