CVE-2016-9188: Moodle

Medium severity, CVSS 6.1. EPSS: 1.5% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerabilities in Moodle CMS on or before 3.1.2 allow remote attackers to inject arbitrary web script or HTML via the s_additionalhtmlhead, s_additionalhtmltopofbody, and s_additionalhtmlfooter parameters.

Affected products

• Moodle Moodle: up to and including 3.1.2

Published 2016-11-04. Last modified 2026-06-17.