Review reviewCritical

CVE-2026-48188

OTRS AG OTRS, ((OTRS)) Community Edition, otrs

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

CVSS: 9.1
EPSS: 0.74%
CISA KEV: Not listed
Published: 2026.06.01

PRIORITY ASSESSMENT

Review review

The CVSS severity warrants an early asset and exposure review.

Known exploitationNot established by KEV

Exploit probability0.74%

Technical severityCVSS 9.1

Vulnerability overview

Affected product and versions

Product: OTRS AG OTRS, ((OTRS)) Community Edition, otrs
Affected versions: >= 7.0.x, >= 8.0.x, >= 2023.x, >= 2024.x, >= 2025.x, >= 2026.x <= 2026.3.x, >= 6.x, <= 6.0.32, >= 7.0.0 <= 8.0.37, >= 2023.0.0 < 2026.4.1
Fixed versions: 2026.4.1

Recommended response sequence

Confirm exposure before applying a vendor-supported change.

Full remediation guide

1
Identify
Confirm that OTRS AG OTRS, ((OTRS)) Community Edition, otrs and an affected version are present.
2
Prioritize
Combine exploitation signals with asset exposure and business criticality.
3
Remediate
Follow the vendor advisory or supported update path and preserve rollback options.
4
Verify
Recheck the version, service health, access paths, and relevant logs.

Technical data

CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
CWE: CWE-20