Unauthenticated disclosure via unprotected frontend configuration endpoint
Published Oct 12, 2026 · Updated Oct 12, 2026
Information disclosure in the OTRS Agent Frontend allows remote attackers to read internal configuration via an unauthenticated endpoint. The configuration endpoint returns data intended for authenticated agents without requiring authentication, exposing installation details such as routes, authorization groups, and enabled features. Exploitation requires network access to the endpoint; the disclosure supports fingerprinting but does not directly expose user credentials or permit configuration changes.
Summary
What happened
Information disclosure in the OTRS Agent Frontend allows remote attackers to read internal configuration via an unauthenticated endpoint. The configuration endpoint returns data intended for authenticated agents without requiring authentication, exposing installation details such as routes, authorization groups, and enabled features. Exploitation requires network access to the endpoint; the disclosure supports fingerprinting but does not directly expose user credentials or permit configuration changes.
The record
- CVE
- CVE-2026-78356
- Published
- Oct 12, 2026
- Updated
- Oct 12, 2026
- Vendor
- OTRS GmbH
- Product
- OTRS
- Classifications
- CWE-497, CAPEC-170, T1592.002
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Oct 12, 2026CVE publishedPublication date reported by the CVE source.
- Oct 12, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
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- Affected versionversion=2023.x
- Affected versionversion=2024.x
- Affected versionversion=2025.x
- Affected versionversion=2026.x <=2026.6.x
- Affected versionversion=8.0.x
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Activity data is delayed. The latest report is Sep 28, 2026.
Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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