The KSES text cleaning filter in lib/weblib.php in Moodle before 1.8.13 and 1.9.x before 1.9.9 does not properly handle vbscript URIs, which allows remote authenticated users to conduct cross-site scripting (XSS) attacks via HTML input.
Cross-site request forgery (CSRF) vulnerability in report/overview/report.php in the quiz module in Moodle before 1.8.13 and 1.9.x before 1.9.9 allows remote attackers to hijack the authentication of arbitrary users for requests that delete quiz attempts via the attemptid parameter.
Cross-site scripting (XSS) vulnerability in Moodle before 1.6.8, 1.7 before 1.7.6, 1.8 before 1.8.7, and 1.9 before 1.9.3 allows remote attackers to inject arbitrary web script or HTML via a Wiki page name (aka page title).
The _bad_protocol_once function in phpgwapi/inc/class.kses.inc.php in KSES, as used in eGroupWare before 1.4.003, Moodle before 1.8.5, and other products, allows remote attackers to bypass HTML filtering and conduct cross-site scripting (XSS) attacks via a string containing crafted URL protocols.
Cross-site scripting (XSS) vulnerability in install.php for Moodle 1.8.3, and possibly other versions before 1.8.4, allows remote attackers to inject arbitrary web script or HTML via the dbname parameter. NOTE: this issue only exists until the installation is complete.
SQL injection vulnerability in ing/blocks/mrbs/code/web/view_entry.php in the MRBS plugin for Moodle allows remote attackers to execute arbitrary SQL commands via the id parameter.
Moodle 1.5.2 and earlier stores sensitive information under the web root with insufficient access control, and provides directory listings, which allows remote attackers to obtain user names, password hashes, and other sensitive information via a direct request for session (sess_*) files in moodledata/sessions/.
Moodle before 1.6.2 does not properly validate the module instance id when creating a course module object, which has unspecified impact and remote attack vectors.
lib/setup.php in Moodle before 1.6.2 sets the error reporting level to 7 to display E_WARNING messages to users even if debugging is disabled, which might allow remote authenticated users to obtain sensitive information by triggering the messages.