A missing check in the Multi-Factor Authentication email factor's revoke/cancel action could lead to a Denial of Service risk for users logging in who have email as their only available second factor. If exploited, the impacted user's name was disclosed.
| Severity/Risk: | Serious |
| Versions affected: | 4.5 to 4.5.3, 4.4 to 4.4.7 and 4.3 to 4.3.11 |
| Versions fixed: | 4.5.4, 4.4.8 and 4.3.12 |
| Reported by: | vi22 |
| CVE identifier: | CVE-2025-3625 |
| Changes (main): | http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-85015 |
| Tracker issue: | MDL-85015 User DoS and name disclosure risks via IDOR in MFA email factor revoke action |