🔐 CVE Alert

CVE-2026-78356

MEDIUM 5.3

Unauthenticated Disclosure of Agent Frontend Configuration

CVSS Score
5.3
EPSS Score
0.0%
EPSS Percentile
0th

The OTRS Agent Frontend configuration endpoint can be accessed without authentication. This allows unauthenticated remote users to retrieve internal application configuration that is intended for use by the authenticated Agent Frontend. The exposed information may include configured frontend routes and their associated authorization groups, authentication configuration, enabled product features, third-party integration settings, and other implementation details. The exposed configuration does not directly contain user credentials or provide unauthorized modification of the OTRS configuration. However, the disclosed information may assist an attacker in fingerprinting the affected OTRS installation and identifying enabled functionality or security-relevant configuration that could be used to prepare further attacks. This issue affects OTRS: * 8.0.X * 2023.X * 2024.X * 2025.X * 2026.X before 2026.7.X

CWE CWE-497
Vendor otrs gmbh (former otrs ag)
Product otrs
Published Oct 12, 2026
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CVSS v3 Breakdown

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

Affected Versions

OTRS GmbH (former OTRS AG) / OTRS
8.0.x 2023.x 2024.x 2025.x 2026.x ≤ 2026.6.x

References

NVD ↗ CVE.org ↗ EPSS Data ↗
otrs.com: https://otrs.com/release-notes/otrs-security-advisory-2026-13/

Credits

🔍 Special thanks to William Bastos (@chor4o) and Samara Gama (igobysamy) for reporting this vulnerability