Moodle · Moodle · CVE-2013-4525
**Name of the Vulnerable Software and Affected Versions**
Moodle versions prior to 2.2.11
Moodle versions 2.3.x before 2.3.10
Moodle versions 2.4.x before 2.4.7
Moodle versions 2.5.x before 2.5.3
**Description**
A cross-site scripting (XSS) issue allows remote authenticated users to inject arbitrary web script or HTML via an answer to a text-based quiz question. This occurs due to insufficient input validation in the quiz module.
**Recommendations**
For versions prior to 2.2.11, update to version 2.2.11 or later.
For versions 2.3.x before 2.3.10, update to version 2.3.10 or later.
For versions 2.4.x before 2.4.7, update to version 2.4.7 or later.
For versions 2.5.x before 2.5.3, update to version 2.5.3 or later.