Description
An improper Input Validation vulnerability in OTRS Customer Backend module allows to access customer information which are restricted to other groups. Please note that the feature has to be anabled and CustomerGroupSupport has to be used to be affected.
This issue affects OTRS:
* 7.0.X
* 8.0.X
* 2023.X
* 2024.X
* 2025.X
* 2026.X before 2026.4.X
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| OTRS | OTRS | 7.0.x, 8.0.x, 2023.x, 2024.x, 2025.x, 2026.x – ≤ 2026.3.x | — |
Advisories 1
- WID-SEC-2026-1748 OTRS: Mehrere Schwachstellen BSI CERT-Bund (WID) · May 31, 2026