Medium · published September 30, 2026
A flaw was found in Moodle. The XML grade import feature lacks proper Cross-Site Request Forgery (CSRF) token validation. By tricking an authenticated user with grade management permissions into visiting a malicious webpage, an attacker can trigger unauthorized requests on the victim's behalf. This flaw allows a remote attacker to set or overwrite student grades without authorization.
| Product | Versions | Fixed in |
|---|---|---|
| moodle/moodle | < 4.5.13 | 4.5.13 |
| moodle/moodle | ≥ 5.0.0, < 5.0.9 | 5.0.9 |
| moodle/moodle | ≥ 5.1.0, < 5.1.6 | 5.1.6 |
| moodle/moodle | ≥ 5.2.0, < 5.2.2 | 5.2.2 |