CVE-2013-5674: Moodle

High severity, CVSS 7.5. EPSS: 2.1% chance of exploitation in the next 30 days.

badges/external.php in Moodle 2.5.x before 2.5.2 does not properly handle an object obtained by unserializing a description of an external badge, which allows remote attackers to conduct PHP object injection attacks via unspecified vectors, as demonstrated by overwriting the value of the userid parameter.

Affected products

• Moodle Moodle: version 2.5.0 only; version 2.5.1 only

Published 2013-09-16. Last modified 2026-06-16.