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

Project Subscriptions

No data.

Advisories

No advisories yet.

Fixes

Solution

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


Workaround

No workaround given by the vendor.

History

Mon, 01 Jun 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

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


Mon, 01 Jun 2026 04:00:00 +0000

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'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: OTRS

Published:

Updated: 2026-06-01T13:14:49.791Z

Reserved: 2026-05-21T07:53:13.254Z

Link: CVE-2026-48189

cve-icon Vulnrichment

Updated: 2026-06-01T13:14:45.902Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-06-01T04:16:22.723

Modified: 2026-06-01T18:12:56.073

Link: CVE-2026-48189

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-01T05:30:20Z

Weaknesses