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Classes are not being listed in Course Overview
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Security Update – PHP Vulnerability

We are aware of the recent critical PHP security vulnerabilities highlighted by the National Cyber Security Centre (NCSC) on 21st October 2026.

We would like to reassure customers that our main platforms, 4Matrix Cloud and 4Matrix Fusion, do not use PHP and are therefore not directly affected by these vulnerabilities.

PHP is used within some of our supporting systems, including our customer support ticketing and billing systems. Our desktop application also communicates with our sales system for licence verification. These systems do not store customers' payment details or sensitive information as part of the licence verification process.

We have been in contact with our hosting provider, Krystal, who has confirmed that the necessary security fixes have been applied to address the reported vulnerabilities.

No action is required from our customers in relation to this advisory.

We take the security of our systems and customer information seriously and will continue to monitor security developments and work with our hosting provider to maintain appropriate protections.

Classes are not being listed in Course Overview

4Matrix Cloud

For classes to show in the Course Overview tool, a Course must be linked to it's classes using a Subject tag.

The following instructions will need to be completed by a 4Matrix Admin user. 

  • To check the links, select Admin > Courses.
  • Here, you will see a list of Course names and a column for Subjects.
  • Check the Course you are working with - is there a subject showing in the Subjects column? You can add/edit the Subject(s) link here using the pencil icon, then save your changes using the save icon.

This might be enough to force the classes to show in Course Overview. If not:

  • Go to Admin > Groups.
  • Find and select the class that should be showing in Course Overview.
  • The Group details screen opens - in the top-left widget (Group Details), select Edit.
  • Check and add/edit the Subject links here.
  • Repeat this step for all classes that should be showing in Course Overview (based on the affected Course).

This might be enough to force the classes to show in Course Overview. If not:

  • Go to Admin > Subjects.
  • Find and select the Subject that the Course requires from the list on the left to view it's details - here, you can check the linked Subject Courses field end ensure it matches the corresponding Course setting. Click Update if you make any changes here.

If classes are still not showing in the Course Overview tool, contact us for assistance. 

 

18/09/2025

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Article ID:
298
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4Matrix Cloud
Date added:
18/09/2025 10:02:33
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