Moodle has released security updates to address vulnerabilities in Moodle prior to versions 4.0.1, 3.11.7, 3.10.11 and 3.9.14. Exploitation of these vulnerabilities may allow an attacker to take control of affected system.
Users and administrators are encouraged to review Moodle Security Advisoriesmod_434582, mod_434581, mod_434580, mod_434579 and mod_434578 and apply necessary updates.