The router’s inconsistent response to invalid course IDs allowed attackers to infer which course IDs exist, potentially aiding reconnaissance.

A serious authentication flaw allowed attackers with valid credentials to bypass multi-factor authentication under certain conditions, potentially compromising user accounts.

Moodle exposed the names of hidden groups to users who had permission to create calendar events but not to view hidden groups. This could reveal private or restricted group information.

A security vulnerability was discovered in Moodle that can allow hackers to gain access to sensitive information about students and prevent them from logging into their accounts, even after they had completed two-factor authentication (2FA).

A flaw has been identified in Moodle where insufficient capability checks in certain grade reports allowed users without the necessary permissions to access hidden grades.

A flaw was discovered in Moodle. Additional checks were required to ensure that users can only access cohort data they are authorized to retrieve.

A flaw was found in Moodle. Insufficient capability checks in a messaging web service allowed users to view other users' names and online statuses.

A flaw has been identified in Moodle where, on certain sites, unauthenticated users could retrieve sensitive user data—including names, contact information, and hashed passwords—via stack traces returned by specific API calls. Sites with PHP configured with zend.exception_ignore_args = 1 in the php.ini file are not affected by this vulnerability.

A flaw was found in Moodle. This vulnerability allows unauthorized users to access and view RSS feeds due to insufficient capability checks.

A security vulnerability was discovered in Moodle that allows some users to access sensitive information about other students before they finish verifying their identities using two-factor authentication (2FA).