CVE-2026-48188
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SQL Injection in OTRS Database Layer

Publication date: 2026-06-01

Last updated on: 2026-06-15

Assigner: OTRS AG

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
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Meta Information
Published
2026-06-01
Last Modified
2026-06-15
Generated
2026-06-21
AI Q&A
2026-06-01
EPSS Evaluated
2026-06-20
NVD
CVE-2026-48188
EUVD
EUVD-2026-33552
Affected Vendors & Products
Showing 3 associated CPEs
Vendor Product Version / Range
otrs otrs to 6.0.32 (inc)
otrs otrs From 7.0.0 (inc) to 8.0.37 (inc)
otrs otrs From 2023.0.0 (inc) to 2026.4.1 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-20 The product receives input or data, but it does not validate or incorrectly validates that the input has the properties that are required to process the data safely and correctly.
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Compliance Impact

The provided information does not specify how the CVE-2026-48188 vulnerability affects compliance with common standards and regulations such as GDPR or HIPAA.

Detection Guidance

This vulnerability occurs only if the MySQL/MariaDB server is configured with the NO_BACKSLASH_ESCAPES SQL mode enabled. Therefore, detecting the vulnerability involves checking the SQL mode configuration of your database server.

You can run the following SQL command on your MySQL/MariaDB server to check if NO_BACKSLASH_ESCAPES mode is enabled:

  • SELECT @@sql_mode;

If the output includes NO_BACKSLASH_ESCAPES, your system is potentially vulnerable if you are running affected OTRS versions.

Additionally, verifying the OTRS version installed on your system against the affected versions (7.0.X, 8.0.X, 2023.X, 2024.X, 2025.X, 2026.X before 2026.4.X, and Community Edition 6.x) will help confirm exposure.

Mitigation Strategies

The recommended immediate mitigation steps are:

  • Update OTRS to version 2026.4.1 or later, as this version contains the fix for the vulnerability.
  • If updating is not immediately possible, reconfigure your MySQL/MariaDB server to disable the NO_BACKSLASH_ESCAPES SQL mode to prevent exploitation.

Note that no patches will be released for OTRS 7, so upgrading to a fixed version or disabling the SQL mode is critical.

Executive Summary

This vulnerability is an improper input validation issue in the database layer module of OTRS or ((OTRS)) Community Edition. It allows an unauthenticated attacker to perform SQL injection, which can lead to bypassing authentication controls.

The vulnerability only affects systems where the MySQL or MariaDB server is configured with the NO_BACKSLASH_ESCAPES SQL mode.

Impact Analysis

An attacker exploiting this vulnerability can bypass authentication without needing valid credentials, potentially gaining unauthorized access to the system.

This can lead to a compromise of sensitive data and unauthorized actions within the affected OTRS system.

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