CVE-2026-48188: SQL Injection via MySQL Quote Method
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 NOBACKSLASHESCAPES 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
Affected Software
Remediation
Recommended actions to resolve this vulnerability, in priority order.
- Upgrade
Upgrade
OTRS (OTRS) Community Editionto a version that resolves this vulnerability.Fixed in 2026.4.1 - Compensating control
Only if your MySQL/MariaDB server is configured with the SQL mode NO_BACKSLASH_ESCAPES (as stated in the advisory), treat the OTRS database layer as exposed to unauthenticated SQL injection risk until OTRS is updated to 2026.4.1 or later.
Event History
Frequently Asked Questions
What is the severity of CVE-2026-48188?
CVE-2026-48188 has a critical severity rating of 9.1.
How do I fix CVE-2026-48188?
To fix CVE-2026-48188, update to version 2026.4.1 or later of OTRS.
What types of applications are affected by CVE-2026-48188?
CVE-2026-48188 affects OTRS and OTRS Community Edition database layer modules.
What is the nature of the vulnerability in CVE-2026-48188?
CVE-2026-48188 is an improper Input Validation vulnerability that allows SQL injection.
Can CVE-2026-48188 lead to more serious issues?
Yes, CVE-2026-48188 can lead to authentication bypass, compromising system security.