Moodle 1.9.x before 1.9.16, 2.0.x before 2.0.7, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 does not validate e-mail address settings, which allows remote authenticated users to have an unspecified impact via a crafted address.
class.phpmailer.php in the PHPMailer library, as used in Moodle 1.9.x before 1.9.16, 2.0.x before 2.0.7, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 and other products, allows remote authenticated users to inject arbitrary e-mail headers via vectors involving a crafted (1) From: or (2) Sender: header.
The webservices functionality in Moodle 2.0.x before 2.0.7, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 allows remote authenticated users to bypass the deleted status and continue using a server via a token.
The self-enrolment functionality in Moodle 2.1.x before 2.1.4 and 2.2.x before 2.2.1 allows remote authenticated users to obtain the manager role by leveraging the teacher role.
Moodle 2.0.x before 2.0.7 and 2.1.x before 2.1.4, when an anonymous front-page forum is enabled, allows remote attackers to obtain session keys for their sessions by visiting the front page.
The form-autocompletion functionality in Moodle 2.0.x before 2.0.7, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 makes it easier for physically proximate attackers to discover passwords by reading the contents of a non-password field, as demonstrated by accessing a create-groups page with Safari on an iPad device.
lib/formslib.php in Moodle 2.1.x before 2.1.4 and 2.2.x before 2.2.1 does not properly handle multiple instances of a form element, which has unspecified impact and remote attack vectors.
Moodle 1.9.x before 1.9.16, 2.0.x before 2.0.7, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 allows remote attackers to view the profile images of arbitrary user accounts via unspecified vectors.
The rc4encrypt function in lib/moodlelib.php in Moodle 1.9.x before 1.9.16, 2.0.x before 2.0.7, 2.1.x before 2.1.4, and 2.2.x before 2.2.1 uses a hardcoded password of nfgjeingjk, which makes it easier for remote attackers to defeat cryptographic protection mechanisms by reading this script's source code within the open-source software distribution.
Cross-site scripting (XSS) vulnerability in the Flash component infrastructure in YUI 2.4.0 through 2.8.1, as used in Bugzilla, Moodle, and other products, allows remote attackers to inject arbitrary web script or HTML via vectors related to charts/assets/charts.swf.