Sage DPW before 202412001 is vulnerable to Incorrect Access Control. The implemented role-based access controls are not always enforced on the server side. Low-privileged Sage users with employee role privileges can create external courses for other employees, even though they do not have the option to do so in the user interface. To do this, a valid request to create a course simply needs to be modified, so that the current user ID in the "id" parameter is replaced with the ID of another user.

Sage DPW before 202412000 is vulnerable to Cross Site Scripting (XSS). Low-privileged Sage users with employee role privileges can permanently store JavaScript code in the Kurstitel and Kurzinfo input fields. The injected payload is executed for each authenticated user who views and interacts with the modified data elements.

An issue was discovered in Sage DPW 202006x before 202006002. The search field "Kurs suchen" on the page Kurskatalog is vulnerable to Reflected XSS. If the attacker can lure a user into clicking a crafted link, he can execute arbitrary JavaScript code in the user's browser. The vulnerability can be used to change the contents of the displayed site, redirect to other sites, or steal user credentials. Additionally, users are potential victims of browser exploits and JavaScript malware.

An issue was discovered in Sage DPW 202006x before 202006002. It allows unauthenticated users to upload JavaScript (in a file) via the expenses claiming functionality. However, to view the file, authentication is required. By exploiting this vulnerability, an attacker can persistently include arbitrary HTML or JavaScript code into the affected web page. The vulnerability can be used to change the contents of the displayed site, redirect to other sites, or steal user credentials. Additionally, users are potential victims of browser exploits and JavaScript malware.