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Moodle 4.5.9

Unsupported Moodle Version
This version of Moodle is no longer supported for general bug fixes.
You are encouraged to upgrade to a supported version of Moodle.

Release date: 9 February 2026

Here is the full list of fixed issues in 4.5.9.

Important 4.5.9 upgrade notice

Please note that sites using third party themes that modify the core admin renderer (such as Moove) are recommended not to upgrade to this minor version, as there is a known breaking change which affects access to site administration. Sites using Boost, Classic or other themes which do not modify site administration rendering are not affected, and it is safe to upgrade (for more information, see MDL-87892). An unscheduled release which addresses this bug will be released imminently.

General fixes and improvements​

  • MDL-87356 - Orphaned random questions should be deleted
  • MDL-81882 - upgrade_block_delete_instances is extremely slow for large sets of blocks and preferences
  • MDL-87258 - Chrome 142 Local Network Access restrictions break LTI
  • MDL-86420 - Database enrolment: Duplicate key value violates unique constraint
  • MDL-87352 - MoodleNet: Warn of removal in supported minors

Accessibility fixes and improvements​

  • MDL-77162 - File picker repositories not keyboard accessible for new users
  • MDL-86639 - The name of the group is not fully displayed in the grade report
  • MDL-87675 - File picker: message not automatically announced by screen readers when uploading wrong file type
  • MDL-87638 - Moving feedback questions is not working
  • MDL-87416 - Glossary entry page has no title
  • MDL-87757 - Accessibility issues with the course overview block on the dashboard
  • MDL-87694 - Page header heading missing when accessing the course participant profile page as guest user
  • MDL-87428 - Keyboard navigation in "Add activity or resource" modal is reversed in RTL languages
  • MDL-87415 - Page title missing when accessing a course participant profile page as guest user
  • MDL-87341 - Aria labels for paging bars is not correct
  • MDL-87288 - Broken pagination in block area
  • MDL-86905 - Improve email verification email by making link clickable
  • MDL-86807 - Keyboard navigation in "Move activity" modal is reversed in RTL languages
  • MDL-86805 - Keyboard navigation in course index behaves incorrectly in RTL languages
  • MDL-86436 - Page heading menu is visible on larger screens even if empty
  • MDL-86416 - The navigation More menu is rendered even if it has no menu items
  • MDL-85535 - Forum older/newer post navigation links cause screen reader confusion

Performance fixes and improvements​

Security fixes​

A number of security related issues were resolved. Details of these issues will be released after a period of approximately one week to allow system administrators to safely update to the latest version.