Provide references for CVE-2021-21809.
Where can I find more information about CVE-2021-21809?
References are available at: https://talosintelligence.com/vulnerability_reports/TALOS-2021-1277, http://packetstormsecurity.com/files/164481/Moodle-SpellChecker-Path-Authenticated-Remote-Command-Execution.html.