It was possible for some users without permission to view other users' full names to do so via the online users block in moodle before 3.10.2, 3.9.5, 3.8.8, 3.5.17.
{ "nvd_published_at": "2021-03-15T22:15:00Z", "cwe_ids": [ "CWE-200", "CWE-863" ], "severity": "MODERATE", "github_reviewed": true, "github_reviewed_at": "2021-03-24T23:14:27Z" }