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CVE-2026-48189

Bypass DedicatedAgentToCustomerGroups Setting

Medium5.7EPSS 0.20%
Published
Updated
Reserved
Assigned by
OTRS

Description

An improper Input Validation vulnerability in OTRS Customer Backend module allows to access customer information which are restricted to other groups. Please note that the feature has to be anabled and CustomerGroupSupport has to be used to be affected. This issue affects OTRS: * 7.0.X * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.4.X

Scores

CVSS scores of CVE-2026-48189, by who scored it
Scored byCVSSScoreVector
OTRSCNA (assigner)3.1Medium5.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
NVDNVD · Analyzed3.1Medium5.7CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N
EPSS (exploitation in 30 days)
0.20% · top 90% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: no · Technical impact: total
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.7.

Weakness

Affected products

  • OTRS AG · OTRS

    • affected 7.0.x
    • affected 8.0.x
    • affected 2023.x
    • affected 2024.x
    • affected 2025.x
    • affected 2026.x – ≤ 2026.3.x

What to do

Solution: Update to OTRS 2026.4.1. or later. Please note that there will be no OTRS 7 patches

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .