Unauthenticated Disclosure of Agent Frontend Configuration

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-78356
StatePUBLISHED
AssignerOTRS
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-12 07:16:36 UTC
Updated2026-10-12 07:16:36 UTC
DescriptionThe 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

Risk And Classification

Primary CVSS: v3.1 5.3 MEDIUM from [email protected]

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Problem Types: CWE-497 | CWE-497 CWE-497 Exposure of Sensitive System Information to an Unauthorized Control Sphere

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
3.1CNACVSS5.3MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA OTRS GmbH Former OTRS AG OTRS affected 8.0.x Not specified
CNA OTRS GmbH Former OTRS AG OTRS affected 2023.x Not specified
CNA OTRS GmbH Former OTRS AG OTRS affected 2024.x Not specified
CNA OTRS GmbH Former OTRS AG OTRS affected 2025.x Not specified
CNA OTRS GmbH Former OTRS AG OTRS affected 2026.x 2026.6.x patch Not specified

References

ReferenceSourceLinkTags
otrs.com/release-notes/otrs-security-advisory-2026-13 [email protected] otrs.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Vendor Comments And Credit

Discovery Credit

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

Additional Advisory Data

Solutions

CNA: Update to latest version of OTRS (2026.7.1. or later). Please note that there will be no OTRS 7 patches

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