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CVE-2026-48188

Otrs authentication bypass

9.1 CRITICALEPSS 0.49%
  1. Published1 Jun 2026

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

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityHigh
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

Affected products

Otrs≥ 2023.0.0 < 2026.4.1 · ≥ 7.0.0 ≤ 8.0.37 · ≤ 6.0.32

Remediation

Fixed in
Otrs≥ 2026.4.1

References

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Frequently asked

Is CVE-2026-48188 being actively exploited?

CVE-2026-48188 is not in the CISA KEV catalog. Its EPSS exploit probability is 0.49%.

How severe is CVE-2026-48188?

CVE-2026-48188 has a CVSS 3.1 base score of 9.1, rated critical. EPSS estimates a 0.49% probability of exploitation.

Which products are affected by CVE-2026-48188?

Affected products include Otrs.

How do I fix CVE-2026-48188?

Upgrade affected software to a fixed version, for example Otrs 2026.4.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-48188 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.