Multiple cross-site scripting (XSS) vulnerabilities in Claroline 1.5.3 through 1.6 Release Candidate 1, and possibly Dokeos, allow remote attackers to inject arbitrary web script or HTML via (1) exercise_result.php, (2) exercice_submit.php, (3) agenda.php, (4) learningPathList.php, (5) learningPathAdmin.php, (6) learningPath.php, (7) userLog.php, (8) tool parameter to toolaccess_details.php, (9) data parameter to user_access_details.php, or (10) coursePath parameter to myagenda.php.