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Koha 24. 05. 15, the latest version of the pioneering free and open source Integrated Library System (ILS), was officially released on October 28, 2025. Koha's development is a collaborative effort involving libraries of various types and sizes, volunteers, and support companies from all around the globe. The software continues to thrive as a community-driven project, with ongoing contributions ensuring its relevance and robustness in library automation.
This release is categorized as a bugfix and maintenance update, focusing on enhancing security and system stability. Koha 24. 05. 15 addresses two critical security vulnerabilities: a client-side CSV formula injection issue within the OPAC’s DataTables component (bug 40525), and the use of raw marc_lib in templates (bug 40818). These fixes reinforce the software’s commitment to protecting library data and user interactions, an essential aspect for any ILS operating in diverse environments.
Users interested in deploying this version can download it from the official Koha website. Installation instructions are comprehensive and accessible both via the Koha Wiki and the INSTALL files included in the software tarball. Potential users are encouraged to consult the community wiki for detailed system requirements, including compatible operating systems and database components necessary for smooth operation.
Documentation remains a cornerstone of the Koha project, maintained through the Sphinx documentation system. The Koha manual is currently available in multiple languages with varying levels of completion. Fully translated manuals include Armenian, English, Finnish, Kazakh, Mongolian, and Tahitian, among others, while many other languages have partial translations. This multilingual support ensures a growing global user base can effectively utilize and contribute to Koha.
In addition to documentation, the user interfaces—both OPAC and staff—have seen significant translation efforts in this release. Languages with near-complete or complete interface translations include Arabic, Armenian, Bulgarian, various forms of Chinese, Dutch, English variants, French, German, Hindi, Polish, Portuguese dialects, Russian, Spanish, and several others. These efforts underscore Koha’s dedication to accessibility and localization in diverse cultural contexts.
The release team acknowledges contributions from individual developers who patched this version, including David Cook, Jonathan Druart, Lucas Gass, and Jesse Maseto. Contributions from libraries, companies, and institutions also supported the development, while several individuals, notably David Cook, Jesse Maseto, and Marcel de Rooy, provided valuable testing services to ensure quality assurance.
Koha’s development is managed using Git, with the main branch hosting the current development version. The branch designated for this release line and future bugfixes is 24. 05. x. Users and developers are encouraged to report bugs and request features through the Koha Bugzilla tracker, facilitating ongoing improvement and community engagement.
As Koha continues to evolve through the collective efforts of its global community, this release reflects the project’s proactive stance on security, usability, and internationalization. The Koha team invites further participation in translation efforts and development to maintain the software’s position as a leading, freely available ILS solution worldwide.
