CVE-2025-3645: Moodle: idor in messaging web service allows access to some user details
A flaw was found in Moodle. Insufficient capability checks in a messaging web service allowed users to view other users' names and online statuses.
Other sources
Insufficient capability checks in a messaging web service made it possible to view other users' names and online status.
Versions affected: 4.5 to 4.5.3, 4.4 to 4.4.7, 4.3 to 4.3.11, 4.1 to 4.1.17 and earlier unsupported versions. Versions fixed: 4.5.4, 4.4.8, 4.3.12 and 4.1.18
— Red Hat
Affected Software
Event History
Frequently Asked Questions
What is the severity of CVE-2025-3645?
CVE-2025-3645 is considered a medium severity vulnerability due to the exposure of user information.
How do I fix CVE-2025-3645?
To fix CVE-2025-3645, upgrade Moodle to a version higher than 4.5.3, 4.4.7, 4.3.11, and 4.1.17.
Which versions of Moodle are affected by CVE-2025-3645?
CVE-2025-3645 affects Moodle versions from 4.1.0 to 4.5.3 inclusive.
What type of data exposure does CVE-2025-3645 cause?
CVE-2025-3645 allows unauthorized users to view other users' names and online statuses.
Is there a workaround for CVE-2025-3645?
The recommended approach for CVE-2025-3645 is to apply the necessary updates rather than rely on a workaround.