The command-line cron implementation in Moodle 2.0.x before 2.0.6 and 2.1.x before 2.1.3 does not properly interact with IP blocking, which might allow remote attackers to bypass intended IP address restrictions by leveraging a configuration in which IP blocking was disabled to restore cron functionality.

Moodle allows attackers to obtain username and course information

Moodle vulnerable to SQL Injection

Moodle creates a MoodleMobile web-service token with an infinite lifetime

Uncontrolled Resource Consumption in moodle

Moodle allows attacks to obtain sensitive information

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.

Cross-site scripting (XSS) vulnerability in message/lib.php in Moodle through 2.2.11, 2.3.x before 2.3.10, 2.4.x before 2.4.7, and 2.5.x before 2.5.3 allows remote authenticated users to inject arbitrary web script or HTML via a crafted message.

Moodle does not consider the moodle/tag:edit capability before adding a tag

Moodle Logged in users could view all calendar events

Moodle Exposure of Sensitive Information to an Unauthorized Actor

Moodle allows attackers to obtain manager privileges

Moodle allows attackers to delete files

Moodle 1.8 before 1.8.11 and 1.9 before 1.9.7 stores (1) password hashes and (2) unspecified "secrets" in backup files, which might allow attackers to obtain sensitive information.

Moodle has multiple cross-site request forgery (CSRF) vulnerabilities in the Forum module

In Moodle before 3.8.2, 3.7.5, 3.6.9 and 3.5.11, X-Forwarded-For headers could be used to spoof a user's IP, in order to bypass remote address checks.

Moodle exposed the names of hidden groups to users

Moodle reflected Cross-site Scripting (XSS)

Directory traversal vulnerability in repository/filesystem/lib.php in Moodle through 2.2.11, 2.3.x before 2.3.10, 2.4.x before 2.4.7, and 2.5.x before 2.5.3 allows remote authenticated users to read arbitrary files via a .. (dot dot) in a path.

Directory traversal vulnerability in file.php in Moodle 1.4.2 and earlier allows remote attackers to read arbitrary session files for known session IDs via a .. (dot dot) in the file parameter.