CVE-2026-48189

Bypass DedicatedAgentToCustomerGroups Setting

Published Jun 1, 2026 CVSS 3.1 · 5.7 Medium EPSS < 1% KEV · Not listed
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

Remediation

Vendor Solution

Update to OTRS 2026.4.1. or later. Please note that there will be no OTRS 7 patches

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
CPEs cpe:2.3:a:otrs:otrs:*:*:*:*:*:*:*:*
Type Values Removed Values Added
First Time appeared Otrs
Otrs otrs
Vendors & Products Otrs
Otrs otrs
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
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
Title Bypass DedicatedAgentToCustomerGroups Setting
Weaknesses CWE-200
References
Metrics cvssV3_1

{'score': 5.7, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
OTRS
Published
Updated
Jun 1, 2026, 1:14 PM
Reserved
May 21, 2026, 7:53 AM
Status
Analyzed
Published
Jun 1, 2026, 4:16 AM
Modified
Jul 22, 2026, 7:10 AM