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RELEASE NOTES FOR KOHA 25.05.09

21 Apr 2026

Koha is the first free and open source software library automation package (ILS). Development is sponsored by libraries of varying types and sizes, volunteers, and support companies from around the world. The website for the Koha project is:

Koha 25.05.09 can be downloaded from:

Installation instructions can be found at:

  • Koha Wiki
  • OR in the INSTALL files that come in the tarball

Koha 25.05.09 is a bugfix/maintenance release.

It includes 1 enhancements, 31 bugfixes.

System requirements

You can learn about the system components (like OS and database) needed for running Koha on the community wiki.

Security bugs

  • 41261 XSS vulnerability in opac/unAPI

    This change validates the inputs to "unapi" so that any invalid inputs will result in a 400 error or a response containing valid options for follow-up requests.

  • 41594 Can access invoice-files.pl even when AcqEnableFiles is disabled

    26.05.00, 25.11.03

  • 42048 Reflected XSS in patron search saved link

    26.05.00, 25.11.03

Bugfixes

Acquisitions

Other bugs fixed

  • 41420 Syntax error in referrer in parcel.tt

    This fixes the URL for the "Cancel order and catalog record" link when receiving an order for an invoice - the referrer section of the URL was missing.

Architecture, internals, and plumbing

Critical bugs fixed

  • 41617 CSV export from item search results - incorrect spaces after comma separator causes issues

    This fixes the CSV export from item search results in the staff interface (Search > Item search> Export select results (X) to CSV).

    It removes extra spaces after the comma separator, which causes issues when using the CSV file with some applications (such as Microsoft Excel).

Other bugs fixed

  • 41142 Update jQuery-validate plugin to 1.21.0

    Sponsored by Athens County Public Libraries

Cataloging

Critical bugs fixed

  • 41481 XML validation error when launching the tag editor for MARC21 fields 006/008

    This fixes an XML validation error ("Can't validate the xml data from (...)/marc21_field_00{6,8}.xml") when using the tag editor for MARC21 fields 006/008. The tag editor now works as expected for these fields.

Other bugs fixed

  • 34879 ./catalogue/getitem-ajax.pl appears to be unused
  • 41475 500 error when placing a hold on records with multiple 773 entries
  • 41588 Link from 856$u breaks with leading or trailing spaces

    If a 856$u for a record had spaces before or after the URL, the link shown on the record page on the OPAC and staff interface (under 'Online resources') did not work.

    Depending on the browser, either nothing happened, or an error was shown that the site wasn't reachable.

    Examples that previously caused links not to work (without the quotes):

    • " koha-community.org"
    • "koha-community.org "
    • " koha-community.org "

Circulation

Other bugs fixed

  • 41055 Missing accesskey attribute for print button (shortcut P)

    Sponsored by Koha-Suomi Oy

  • 41345 Regression: Clicking the 'Ignore' button on hold found modal for already-waiting hold does not dismiss the modal (again)

    This fixes a regression when checking in an item. Clicking the "Ignore" option in the dialog box, when an item already has a waiting status, just reloaded the dialog box. Clicking the "Ignore" option now closes the dialog box and works as expected.

I18N/L10N

Other bugs fixed

  • 41623 Missing translation string in catalogue_detail.inc (again)
  • 41689 "Staff note" and "OPAC" message types in patron files untranslatable

ILL

Other bugs fixed

  • 41237 OPAC created requests ignore library selection, always default to patron's library

    This fixes a bug on the OPAC create ILL request form which was always setting the library to the patron's library, ignoring the library selection made on the form.

  • 41465 Unauthenticated request does not display 'type' correctly
  • 41478 AutoILLBackendPriority - Unauthenticated request shows backend form if wrong captcha
  • 41512 ILLCheckAvailability stage table doesn't render

    This fixes creating ILL requests when the ILLCheckAvailability system preference is used - the checking for availability was not completed and the table was not shown.

Notices

Other bugs fixed

  • 40960 Only generate a notice for patrons about holds filled if they have set messaging preferences

    Currently, if a patron has not set any messaging preferences for notifying them about holds filled, a print notice is still generated.

    With this change, a notice is now only generated for a patron if their messaging preferences for 'Hold filled' are set. This matches the behavor for overdue and hold reminder notices.

Patrons

Other bugs fixed

  • 41040 Empty patron search from the header should not trigger a patron search

    This fixes the "Search patrons" option in the staff interface menu bar. Currently, clicking "Search patrons" and then the arrow (without entering a value) automatically performs a search.

    With this change, a patron search is now no longer automatic. If you don't enter anything, or don't select any options, you are now prompted (using a tooltip) to enter a patron name or card number.

    NOTE: This is a change in behavour from what you may be used to.

  • 41752 Guarantor first name and guarantor surname mislabeled in system preferences

SIP2

Other bugs fixed

  • 41458 SIP passes UID instead of GID to Net::Server causing error

    This fixes an error that may occur when starting the SIP server: "...Couldn't become gid "": Operation not permitted...". Koha was passing an incorrect value to the Net::Server "group" parameter.

Serials

Other bugs fixed

  • 36466 Incorrect date value stored when "Published on" or "Expected on" are empty

    Editing a serial and removing the dates in the "Published on" and "Expected on" fields generated a 500 error (Serials > [selected serial] > Serial collection).

    This fixes the error and:

    • Sets the data in the database to NULL
    • Shows the dates as "Unknown" in the serial collection table for the "Date published" and "Date received" columns
    • Changes any existing 0000-00-00 dates in the database to NULL (for existing installations)

Staff interface

Other bugs fixed

  • 41422 New FilterSearchResultsByLoggedInBranch doesn't fully translate

    This fixes the translatability of the text shown when the FilterSearchResultsByLoggedInBranch system preference is enabled, and also the check and what is shown only works when not translated.

  • 41679 Stock rotation repatriation modal can conflict with holds modal

System Administration

Critical bugs fixed

  • 41431 Circulation rule notes dropping when editing rule

    This fixes editing circulation and fine rules with notes - notes are now correctly shown when editing, and are not lost when saving the rule.

    Previously, if you edited a rule with a note, it was not displayed in the edit field and was removed when the rule was saved.

    Sponsored by Koha-Suomi Oy

Other bugs fixed

  • 19690 Smart rules: Term "If any unavailable" is confusing
  • 41540 staffShibOnly - update description for system preference

    This updates the description for the staffShibOnly system preference and fixes grammar and spelling:

    • "login" to "log in"
    • "shibboleth" to "Shibboleth" (capitalized)

Templates

Other bugs fixed

  • 41351 Capitalization: Override Renew hold for another

    This fixes the capitalization for a log viewer message: "Override Renew hold for another" to "Override renew hold for another".

  • 41764 ISSN hidden input missing from Z39.50 search form navigation

    This fixes the Acquisitions and Cataloging Z39.50 search forms so that the pagination works when searching using the ISSN input field.

    When you click the next page of results, or got to a specific result page, the search now works as expected - it remembers the ISSN you were searching for, with "You searched for: ISSN: XXXX" shown above the search results, and search results shown.

    Previously, the ISSN was not remembered, and "Nothing found. Try another search." was shown, and no further search results were shown.

    Sponsored by Athens County Public Libraries

Test Suite

Other bugs fixed

  • 41449 Reserves.t may fail when on shelf holds are restricted

Enhancements

OPAC

Enhancements

  • 41655 Local OPAC covers are not displayed in OPAC lists

    This fixes a regression where the local cover images were no longer displayed in lists in the OPAC and staff interface. With this fix, the local cover images are back in the lists in both interfaces.

Documentation

The Koha manual is maintained in Sphinx. The home page for Koha documentation is

The Git repository for the Koha manual can be found at

Translations

Complete or near-complete translations of the OPAC and staff interface are available in this release for the following languages:

  • Arabic (ar_ARAB) (92%)
  • Armenian (hy_ARMN) (100%)
  • Bulgarian (bg_CYRL) (100%)
  • Chinese (Simplified Han script) (83%)
  • Chinese (Traditional Han script) (97%)
  • Czech (67%)
  • Dutch (86%)
  • English (100%)
  • English (New Zealand) (61%)
  • English (USA)
  • Finnish (99%)
  • French (100%)
  • French (Canada) (99%)
  • German (99%)
  • Greek (65%)
  • Hindi (94%)
  • Italian (81%)
  • Norwegian Bokmål (71%)
  • Persian (fa_ARAB) (93%)
  • Polish (99%)
  • Portuguese (Brazil) (99%)
  • Portuguese (Portugal) (88%)
  • Russian (93%)
  • Slovak (59%)
  • Spanish (98%)
  • Swedish (89%)
  • Telugu (65%)
  • Turkish (80%)
  • Ukrainian (74%)
  • Western Armenian (hyw_ARMN) (60%)

Partial translations are available for various other languages.

The Koha team welcomes additional translations; please see

For information about translating Koha, and join the koha-translate list to volunteer:

The most up-to-date translations can be found at:

Release Team

The release team for Koha 25.05.09 is

  • Release Manager: Lucas Gass

  • QA Manager: Martin Renvoize

  • QA Team:

    • Marcel de Rooy
    • Martin Renvoize
    • Jonathan Druart
    • Laura Escamilla
    • Lucas Gass
    • Tomás Cohen Arazi
    • Lisette Scheer
    • Nick Clemens
    • Paul Derscheid
    • Emily Lamancusa
    • David Cook
    • Matt Blenkinsop
    • Andrew Fuerste-Henry
    • Brendan Lawlor
    • Pedro Amorim
    • Kyle M Hall
    • Aleisha Amohia
    • David Nind
    • Baptiste Wojtkowski
    • Jan Kissig
    • Katrin Fischer
    • Thomas Klausner
    • Julian Maurice
    • Owen Leonard

  • Documentation Manager: David Nind

  • Documentation Team:

    • Philip Orr
    • Aude Charillon
    • Caroline Cyr La Rose

  • Translation Manager: Jonathan Druart

  • Wiki curators:

    • George Williams
    • Thomas Dukleth

  • Release Maintainers:

    • 25.11 -- Jacob O'Mara
    • 25.05 -- Laura Escamilla
    • 24.11 -- Fridolin Somers
    • 22.11 -- Wainui Witika-Park (Catalyst IT)

  • Release Maintainer assistants:

    • 25.11 -- Chloé Zermatten
    • 24.11 -- Baptiste Wojtkowski
    • 22.11 -- Alex Buckley & Aleisha Amohia

Credits

We thank the following libraries, companies, and other institutions who are known to have sponsored new features in Koha 25.05.09

We thank the following individuals who contributed patches to Koha 25.05.09

  • Pedro Amorim (8)
  • Tomás Cohen Arazi (1)
  • David Cook (4)
  • Jonathan Druart (2)
  • Laura Escamilla (3)
  • Andrew Fuerste-Henry (3)
  • Lucas Gass (3)
  • Ayoub Glizi-Vicioso (1)
  • Kyle M Hall (3)
  • Owen Leonard (5)
  • Photonyx (1)
  • Martin Renvoize (1)
  • Marcel de Rooy (2)
  • Caroline Cyr La Rose (1)
  • Andreas Roussos (1)
  • Slava Shishkin (2)
  • Emmi Takkinen (1)
  • Hammat Wele (4)
  • Baptiste Wojtkowski (3)
  • Samuel Young (1)

We thank the following libraries, companies, and other institutions who contributed patches to Koha 25.05.09

We also especially thank the following individuals who tested patches for Koha

  • Richard Bridgen (1)
  • Nick Clemens (2)
  • David Cook (1)
  • Roman Dolny (1)
  • Jonathan Druart (8)
  • Laura Escamilla (43)
  • Katrin Fischer (3)
  • Andrew Fuerste-Henry (1)
  • Lucas Gass (11)
  • Stephen Graham (2)
  • Kyle M Hall (10)
  • Jan Kissig (1)
  • Owen Leonard (9)
  • David Nind (26)
  • Martin Renvoize (2)
  • Marcel de Rooy (6)
  • Caroline Cyr La Rose (1)
  • Lisette Scheer (3)
  • Emmi Takkinen (2)
  • Baptiste Wojtkowski (1)
  • Anneli Österman (1)

We regret any omissions. If a contributor has been inadvertently missed, please send a patch against these release notes to koha-devel@lists.koha-community.org.

Revision control notes

The Koha project uses Git for version control. The current development version of Koha can be retrieved by checking out the main branch of:

The branch for this version of Koha and future bugfixes in this release line is 25.05.x.

Bugs and feature requests

Bug reports and feature requests can be filed at the Koha bug tracker at:

He rau ringa e oti ai. (Many hands finish the work)

Autogenerated release notes updated last on 21 Apr 2026 23:56:15.