An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows an unauthenticated SQL injection which can lead to an authentication bypass. This issue only affects the system if the MySQL/MariaDB server is configured with the NO_BACKSLASH_ESCAPES SQL mode.

This issue affects OTRS:

* 7.0.X
* 8.0.X
* 2023.X
* 2024.X
* 2025.X
* 2026.X before 2026.4.X
* (OTRS)) Community Edition: 6.0.x

Products based on the ((OTRS)) Community Edition also very likely to be affected

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

Reconfigure MySQL/MariaDB servernot to use NO_BACKSLASH_ESCAPES SQL

History

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

Type Values Removed Values Added
Description An improper Input Validation vulnerability in OTRS or ((OTRS)) Community Edition database layer module allows an unauthenticated SQL injection which can lead to an authentication bypass. This issue only affects the system if the MySQL/MariaDB server is configured with the NO_BACKSLASH_ESCAPES SQL mode. This issue affects OTRS: * 7.0.X * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.4.X * (OTRS)) Community Edition: 6.0.x Products based on the ((OTRS)) Community Edition also very likely to be affected
Title SQL Injection via MySQL Quote Method
Weaknesses CWE-20
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: OTRS

Published:

Updated: 2026-06-01T03:33:15.822Z

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

Link: CVE-2026-48188

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-01T04:16:22.583

Modified: 2026-06-01T04:16:22.583

Link: CVE-2026-48188

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.

Weaknesses