Hello everybody,
Wowza Streaming Engine version 4.9.6 has been released and this contains a number of security and other awaited fixes. Please find the release notes HERE and a list of the fixes since the release of version 4.9.5 below:
- Added support for webhook notifications to actively monitor various streaming events.
- Added the ability to programmatically configure SRT listener mode using the Wowza Streaming Engine REST API.
- Updated the Facebook Graph API to version 23.0.
- Updated the OpenSSL library used for encryption with SRT workflows on Windows installations to version 3.5.2.
- Added ARM variants for Wowza Streaming Engine images in the wowza/wowza-streaming-engine and wowza/wowza-streaming-engine-manager Docker Hub repositories.
- Fixed an issue when using SRT listener mode that caused failed connections when publishing a stream name containing a period character.
- Fixed an issue where copying an application configured for SRT ingest and HLS output doesn’t produce the same PublishMethod settings in the Application.xml.
- Fixed an issue causing an additional space to display between a file name and the SMIL file extension in Wowza Streaming Engine Manager.
- Fixed an issue related to reduced performance and growing memory usage when using the Transcoder and NVIDIA workflows with Ubuntu 24.04.
- Fixed an issue with Wowza Video stream targets failing to connect to certain AWS regions, and made all regions available.
- Fixed an issue causing 514 live stream repeater response codes when using WebRTC with SecureToken content protection and origin edge workflows.
- Fixed an issue where VOD subtitle tracks could intermittently fail to load or disappear during playback when switching tracks, seeing, or selecting subtitles.
- Fixed an issue related to read-only permissions and using Wowza Streaming Engine REST API operations.
- Fixed an issue where region changes for Wowza Video stream targets did not take effect, and made the Wowza Video Region dropdown uneditable after stream target creation.
- Fixed an issue causing duplicate subtitle tracks in HLS manifests when using a SMIL file to deliver an ABR HLS stream with WebVTT subtitles enabled.
- Fixed an issue where excessive handleRTPPacket: RTP sequence jump outside expected bounds warnings caused stream timeouts and large log files.
- Fixed an issue preventing some European language characters in DVB Teletext subtitles from displaying by adding level 1.5 decoding support.
- Fixed a deadlock issue in WMSReentrantReadWriteLock caused by read-to-write lock upgrades across multiple threads, which caused Wowza Streaming Engine to become unresponsive.
- Fixed an issue preventing debug statistics from being logged for SRT listener mode when srtDebug and srtTimesToPrintStats properties are enabled in the VHost.xml.
- Fixed an issue in the wowzamedia/wowza-streaming-engine-linux 4.9.5 Docker image where containers didn’t define a non-root, dedicated user.
- Fixed an issue where duplicate #EXT-X-DISCONTINUITY-SEQUENCE tags in playlists with Akamai stream targets caused playback failures on iOS.
- Fixed an issue with CEA-608 captions where unsupported characters were not being substituted correctly.
- Fixed CVE-2025-41234 security vulnerability by upgrading to Spring Framework (org.springframework) 6.1.21 and Spring Boot (org.springframework.boot) 3.3.13.
- Fixed CVE-2025-48989 and CVE-2025-41249 security vulnerabilities by upgrading Tomcat (org.apache.tomcat) to version 10.1.33 and Spring Framework (org.springframework) 6.2.11.
- Fixed an issue preventing video playback when using graphic overlay images and the default transcoding pipeline on Windows.
Regards,
Jason Hilton
Senior Technical Support Engineer
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