In Daybyday CRM, versions 2.0.0 through 2.2.0 are vulnerable to Missing Authorization. An attacker that has the lowest privileges account (employee type user), can view the absences of all users in the system including administrators. This type of user is not authorized to view this kind of information.
CWE-862 - Missing Authorization
The missing authorization vulnerability occurs when a software program allows users to access privileged parts of the program without verifying the user credentials. Impact of such a vulnerability depends on the resources employed by the software, ranging from account takeover to sensitive information exposure, denial of service, and complete system takeover.