The router’s inconsistent response to invalid course IDs allowed attackers to infer which course IDs exist, potentially aiding reconnaissance.
CVSS Score
5.3
EPSS Score
0.0
Published
2025-10-23
A serious authentication flaw allowed attackers with valid credentials to bypass multi-factor authentication under certain conditions, potentially compromising user accounts.
CVSS Score
5.4
EPSS Score
0.001
Published
2025-10-23
Moodle’s mobile and web service authentication endpoints did not sufficiently restrict repeated password attempts, making them susceptible to brute-force attacks.
CVSS Score
7.5
EPSS Score
0.001
Published
2025-10-23
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.
CVSS Score
4.3
EPSS Score
0.0
Published
2025-10-23
An issue in Moodle’s timed assignment feature allowed students to bypass the time restriction, potentially giving them more time than allowed to complete an assessment.
CVSS Score
5.4
EPSS Score
0.0
Published
2025-10-23
A flaw was found in the course overview output function where user access permissions were not fully enforced. This could allow unauthorized users to view information about courses they should not have access to, potentially exposing limited course details.
CVSS Score
4.3
EPSS Score
0.0
Published
2025-10-23
Moodle failed to verify enrolment status correctly when sending quiz notifications. As a result, suspended or inactive users might receive quiz-related messages, leaking limited course information.
CVSS Score
4.3
EPSS Score
0.0
Published
2025-10-23
A flaw in the cohort search web service allowed users with permissions in lower contexts to access cohort information from the system context, revealing restricted administrative data.
CVSS Score
4.3
EPSS Score
0.0
Published
2025-10-23
An error-handling issue in the Moodle router (r.php) could cause the application to display internal directory listings when specific HTTP headers were not properly configured.
CVSS Score
5.3
EPSS Score
0.0
Published
2025-10-23
A session fixation vulnerability in Moodle 3.x through 3.11.18 allows unauthenticated attackers to hijack user sessions via the sesskey parameter. The sesskey can be obtained without authentication and reused within the OAuth2 login flow, resulting in the victim's session being linked to the attacker's. Successful exploitation results in full account takeover. According to the Moodle Releases page, "Bug fixes for security issues in 3.11.x ended 11 December 2023." NOTE: This vulnerability only affects products that are no longer supported by the maintainer.
CVSS Score
4.2
EPSS Score
0.001
Published
2025-06-24
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