Wren:DS 5.1.0 Released

April 7, 2026

A new version of Wren:DS 5.1.0 has been released.

This release brings important improvements across the board, including JDK 25 build support, migration to a UBI-based Temurin container image, and a number of bug fixes addressing replication, JMX monitoring, and the control panel. On the security side, the project has migrated from sun.security.x509 to the Bouncy Castle API and adopted Scorecard security assessment with Dependabot integration.

Changes

List of significant changes:

• Add JDK 25 build support
• Migrate to UBI-based Temurin container image
• Replace JUEL with Eclipse Expressly
• Replace clirr with japicmp for API compatibility checking
• Migrate from sun.security.x509 to Bouncy Castle API
• Correct replication late queue handling
• Fix unavailable monitoring attributes over JMX
• Resolve false "unsaved changes" warnings in control panel
• Correct writabilityPolicy evaluation for readOnlyDiscardWrites
• Implement Scorecard security assessment and add Dependabot configuration
• Multiple dependency upgrades

How to get

Refer to the Getting Started page to learn how to get and run Wren:DS.

Alternatively you can run the official Docker image from Docker Hub:

docker run --rm --name wrends-test -p 1389:1389 -p 1636:1636 wrensecurity/wrends:5.1.0

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