Pimcore Web2Print Tools Bundle "Favourite Output Channel Configuration" Missing Function Level Authorization
Date: 2026-01
Affected: composer/pimcore/web2print-tools-bundle, composer/pimcore/web2print-tools-bundle
Attack vector: auth-bypass
Category: vulnerability-disclosure
Severity: Medium
CVE: CVE-2026-23496
CWE: CWE-284
CVSS: 5.4 (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N)

### Summary The application fails to enforce proper server-side authorization checks on the API endpoint responsible for managing "Favourite Output Channel Configurations." Testing revealed that an authenticated backend user without explicitely lacking permissions for this feature was still able to successfully invoke the endpoint and modify or retrieve these configurations. This violates the principle of least privilege and constitutes a classic example of Broken Access Control (OWASP Top 10 A01:2021). Because authorization is not validated at the function level, any authenticated user can perform actions intended only for privileged roles, leading to horizontal or vertical privilege escalation. ### Detail The backend user without permission was still able to list, create, update "Favourite Output Channel Configuration" item ### Step to Reproduce the issue login as Admin (full permission) and clicked "Favourite Output Channel Configurations" <img width="949" height="860" alt="Screenshot 2025-12-10 at 8 52 55 PM" src="https://github.com/user-attachments/assets/86554e7e-86c1-469f-b09b-5f360c4507dd" /> Then, captured and saved the request: -List API <img width="923" height="662" alt="Screenshot 2025-12-10 at 8 55 49 PM" src="https://github.com/user-attachments/assets/21d90540-7a6b-4555-bbc0-ce74284dda67" /> -Create API <img width="1245" height="783" alt="Screenshot 2025-12-10 at 9 01 46 PM" src="https://github.com/user-attachments/assets/38b5a771-ad17-459b-84e1-fe83c6d609a1"


Mitigations:

Architectural layers (MAESTRO):