Additional checks were required to ensure users can only fetch cohort data they are intended to have access to.
| Severity/Risk: | Minor |
| 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 |
| Reported by: | Paul Holden |
| CVE identifier: | CVE-2025-3647 |
| Changes (main): | http://git.moodle.org/gw?p=moodle.git&a=search&h=HEAD&st=commit&s=MDL-84865 |
| Tracker issue: | MDL-84865 IDOR when accessing the cohorts report |