Moodle 4.5.3

Security Support Only Moodle Version

This version of Moodle receives security fixes, but is no longer supported for general bug fixes.
You may view the releases page to see the support status of all Moodle versions.

Release date: 17 March 2025

Here is the full list of fixed issues in 4.5.3.

General fixes and improvements

• MDL-83541 - error_question_answers_missing_in_db when duplicate or restore quiz
• MDL-80386 - Lost link to "Show all questions" when adding questions to quiz
• MDL-84327 - Assignment & quiz notifications sent to all course participants regardless of activity restrictions
• MDL-77646 - Embed PDF not working on Safari iOS
• MDL-84051 - Table mdl_sessions does not get cleaned
• MDL-82440 - Ghostscript 10.03.1 and above breaks assignment feedback preview
• MDL-83784 - Deleting category used in a random question breaks the quiz structure
• MDL-79265 - Questions disappear from the question bank display if the latest version is hidden
• MDL-84543 - New router seems to clash with $CFG->wwwroot "no slash" requirement
• MDL-80351 - Chart axis options ignored
• MDL-82601 - SCORM score not being stored when force complete is used
• MDL-84416 - Duplicate activity also duplicates badges
• MDL-65233 - Unexpected behaviour of course reset when using a course start time (timeshift)
• MDL-84398 - Chart.js - User locale settings ignored for numeric series data
• MDL-84147 - Large Icon within Moodle Competency Frameworks
• MDL-75442 - When manually grading questions, validation errors styling makes them hard to see, leading to confusion
• MDL-84295 - Activity description text displayed differently on course page and activity pages
• MDL-69142 - Unknown column "rolename" in "order clause" in Assign user roles to cohort
• MDL-84584 - Creating a badge removes all draftfiles for a user
• MDL-84313 - WebM and OGV cannot be played fully in the app because the range headers are blocked by CORS
• MDL-83720 - Broken image links in tag description from external service
• MDL-83970 - Use component name in AI registration and logging
• MDL-84348 - Guest users should not see the message "You are in preview mode"
• MDL-84256 - Remove course icon from course/index.php page
• MDL-84551 - AI image generation produces High quality when Standard is chosen
• MDL-84651 - Extend AI model support in placement webservice
• MDL-84532 - mdl_qtype_ordering_options.questionid not found in aggregate or GROUP BY - error when upgrading to 4.5.2 with Microsoft SQL server
• MDL-67462 - The get_user_badges web service return does not match exporter types

Security fixes

• MSA-25-0011 - Unauthenticated REST API user data exposure
• MSA-25-0012 - Hidden grades are shown to users without permission on some grade reports