CVE-2009-0502: Moodle

Medium severity, CVSS 4.3. EPSS: 1.3% chance of exploitation in the next 30 days.

Cross-site scripting (XSS) vulnerability in blocks/html/block_html.php in Snoopy 1.2.3, as used in Moodle 1.6 before 1.6.9, 1.7 before 1.7.7, 1.8 before 1.8.8, and 1.9 before 1.9.4, allows remote attackers to inject arbitrary web script or HTML via an HTML block, which is not properly handled when the "Login as" feature is used to visit a MyMoodle or Blog page.

Affected products

• Moodle Moodle: version 1.7.0 only; version 1.7.1 only; version 1.7.2 only; version 1.7.3 only; version 1.7.4 only; version 1.7.5 only; …
• Snoopy Snoopy: version 1.2.3 only

Published 2009-02-10. Last modified 2026-06-16.