CVE-2026-48189
Medium
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
SeverityMedium
CVSS5.7
Exploit probability—
Product
Otrs
PublishedJun 1, 2026
First seenJun 1, 2026
Weakness typeCWE-200Sensitive information exposure
How to fix
Update
- otrs otrs2026.4.1 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| otrs otrs | 7.0.0 ≤ v ≤ 8.0.37, 2023.0.0 ≤ v < 2026.4.1 | 2026.4.1 |
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