We have recently requested for this plugin to be installed onto our Moodle site. Our hosts have performed a security review of the code and have flagged a potential issue with the view.php file on line #74 as follows -
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Reading query parameters from the referer URL with no cleaning. The usage of the variable in question appears to be safe, but a call to clean_param() is certainly advisable here.
Can the $results['id'] variable have some additional checks and run the clean_param() method on it.