Insufficient capability checks in a learning plan web service could result in users having the ability to retrieve information they did not have permission to access (such as users' names). Versions affected: 4.5, 4.4 to 4.4.4, 4.3 to 4.3.8, 4.1 to 4.1.14 and earlier unsupported versions. Versions fixed: 4.5.1, 4.4.5, 4.3.9 and 4.1.15