Vulnerability Report

CVE-2026-48189

Title: Information Disclosure in Customer Backend module

Information Disclosure

Proof Of Concept

No public PoC currently indexed for CVE-2026-48189.

CWE Category CWE-200

Published Date Jun 01, 2026

Modified Date Jun 15, 2026

Exploit Status Not Found

Score 5.7 CVSS v3.1

Exploit Probability (EPSS)

0.20%

Vulnerability Summary

CVE-2026-48189: 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

Impacted Vendors

otrs 1

Reference Links

https://otrs.com/release-notes/otrs-security-advisory-2026-03/

CVSS v3.1

Source Entity [email protected]

Severity MEDIUM

5.7

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

REQUIRED

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-48189 Exploits & PoCs (Proof Of Concept)

No public PoCs found in our database for this CVE.

June 15, 2026 MODIFIED

Vulnerability data updated via NVD.

June 01, 2026 MODIFIED

Vulnerability data updated via NVD.

June 01, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction REQUIRED

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.