This release introduces UserRegistry Attribute Reader APIs for retrieving user attributes from LDAP and custom registries, and adds support for Jandex index formats 11-13 to improve application startup performance.

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Open Liberty 26.0.0.3 ships two notable enhancements. First, the UserRegistry API gains two new methods — getAttributesForUser() and getUsersByAttribute() — enabling applications to retrieve specific user attributes (e.g., email, phone number) and search for users by attribute values from LDAP and custom registries, capabilities previously only available via the WebSphere VMM API. Second, Open Liberty now supports Jandex index formats 11–13 (generated by Jandex 3.1.0 through 3.5.3), removing the previous cap at format 10. This allows developers to use the latest Jandex Maven and Gradle plugins without workarounds, preserving annotation-indexing startup performance benefits. No server.xml changes are required; Jandex support is enabled via the useJandex property. Notable limitations include the mpGraphQL feature remaining capped at format 10, and the requirement to keep Jandex indexes synchronized with application classes.

UserRegistry Attribute Reader Enhancement and Jandex Index Format Support Update in 26.0.0.3- OpenLiberty.io