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GHSA-4wg4-p27p-5q2r
No affected components available
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" /> -Update API <img width="1244" height="726" alt="Screenshot 2025-12-10 at 9 03 00 PM" src="https://github.com/user-attachments/assets/2167d48e-8941-4fff-be07-3050ffa7ad35" />
Next, login a backend user with no permission <img width="1219" height="744" alt="Screenshot 2025-12-10 at 9 06 12 PM" src="https://github.com/user-attachments/assets/6b3981bc-4fe0-4c6e-8a5b-24523679ad4c" /> The copy the "Cookie" and "X-Pimcore-Csrf-Token" <img width="1902" height="971" alt="Screenshot 2025-12-10 at 9 10 47 PM" src="https://github.com/user-attachments/assets/4f48f27a-6149-49fb-9209-220c2e62c25f" /> After that, pasted the copied "Cookie" and "X-Pimcore-Csrf-Token" to captured request
- List API <img width="1135" height="660" alt="Screenshot 2025-12-10 at 9 14 47 PM" src="https://github.com/user-attachments/assets/32ebdad2-771a-41dd-a4e6-13e8cb8ef201" />
- Create API <img width="1140" height="697" alt="Screenshot 2025-12-10 at 9 16 43 PM" src="https://github.com/user-attachments/assets/25d5b7a9-5e96-4e7c-94cf-3c9c3d31e7f1" />
- Update API <img width="1144" height="722" alt="Screenshot 2025-12-10 at 9 19 00 PM" src="https://github.com/user-attachments/assets/02440595-2e10-44a8-9fb7-8eb8f0aab12a" />
Impact
Successful exploitation allows low-privileged or standard users to view, create, modify that should be restricted to specific administrative or operational roles. Depending on the sensitivity of these configurations (e.g., routing of alerts, reports, or data streams), an attacker could redirect critical outputs, suppress notifications, insert misleading channels, or gain insight into internal workflows. In regulated environments, this may result in compliance violations, operational disruption, or facilitation of further attacks through reconnaissance.
The vulnerability can be exploited over the network without needing physical access. It is easy for an attacker to exploit this vulnerability. An attacker needs basic access or low-level privileges. No user interaction is needed for the attacker to exploit this vulnerability. The impact is confined to the system where the vulnerability exists. There is a low impact on the confidentiality of the information. There is a low impact on the integrity of the data.
Exploitation attempts have been detected. Elevated vigilance and prompt remediation are advised.
The exploit probability is very low. The vulnerability is unlikely to be exploited in the next 30 days.
We did not find any exploit available. Neither in GitHub repositories nor in the Exploit-Database.
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