Improper Input Validation in OTRS Customer Backend Module
CVE-2026-48189

5.7MEDIUM

Key Information:

Vendor

Otrs Ag

Status
Otrs
Vendor
CVE Published:
1 June 2026

What is CVE-2026-48189?

An improper Input Validation vulnerability exists in the OTRS Customer Backend module, which can lead to unauthorized access to customer information that should be restricted to specific user groups. This issue manifests when the CustomerGroupSupport feature is enabled, potentially compromising sensitive data for users across different groups. Organizations utilizing impacted versions must take immediate action to safeguard against this risk.

Affected Version(s)

OTRS 7.0.x

OTRS 7.0.x

OTRS 8.0.x

References

https://otrs.com/release-notes/otrs-security-advisory-202...

CVSS V3.1

Score:
5.7
Severity:
MEDIUM
Confidentiality:
High
Integrity:
None
Availability:
High
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
Low
User Interaction:
Required
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.