Description
A flaw was found in Moodle. User list filters do not properly enforce visibility restrictions on user profile fields. An authorized user with manager privileges can filter user lists using profile attributes they are not permitted to view directly, resulting in unauthorized information disclosure by inferring hidden user data.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| — | moodle | 5.2.0 – < 5.2.2, 5.1.0 – < 5.1.6, 5.0.0 – < 5.0.9, < 4.5.13 | 5.2.2 |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 18.04 LTS | moodle | No fix yet | — |
| Ubuntu Pro 16.04 LTS | moodle | No fix yet | — |
Advisories 1
- WID-SEC-2026-3686 Moodle: Mehrere Schwachstellen BSI CERT-Bund (WID) · Sep 30, 2026