CVE-2015-3174: Moodle

Low severity, CVSS 3.5. EPSS: 1.4% chance of exploitation in the next 30 days.

mod/quiz/db/access.php in Moodle through 2.5.9, 2.6.x before 2.6.11, 2.7.x before 2.7.8, and 2.8.x before 2.8.6 does not set the RISK_XSS bit for graders, which allows remote authenticated users to conduct cross-site scripting (XSS) attacks via crafted gradebook feedback during manual quiz grading.

Affected products

• Moodle Moodle: up to and including 2.5.9; version 2.5.0 only; version 2.5.1 only; version 2.5.2 only; version 2.5.3 only; version 2.5.4 only; …

Published 2015-06-01. Last modified 2026-06-17.