Description
lib/setup.php in Moodle through 2.4.11, 2.5.x before 2.5.9, 2.6.x before 2.6.6, and 2.7.x before 2.7.3 does not provide charset information in HTTP headers, which might allow remote attackers to conduct cross-site scripting (XSS) attacks via UTF-7 characters during interaction with AJAX scripts.
Remediation
References
Related Vulnerabilities
Moodle Exposure of Sensitive Information to an Unauthorized Actor Vulnerability (CVE-2011-4279)
WordPress Plugin Mingle Forum Multiple Cross-Site Scripting Vulnerabilities (1.0.33)
WordPress Plugin StreamCast-Radio Player for WordPress Cross-Site Scripting (2.1)
WordPress Plugin More from Google Cross-Site Scripting (0.0.2)