CVE-2025-24391
Possible user enumeration
A vulnerability in the External Interface of OTRS allows conclusions to be drawn about the existence of user accounts through different HTTP response codes and messages. This enables an attacker to systematically identify valid email addresses.
This issue affects:
-
OTRS 7.0.X
-
OTRS 8.0.X
-
OTRS 2023.X
-
OTRS 2024.X
-
OTRS 2025.X
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- None
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- None
- Availability
- None
Exploit likelihood
What each source reports
CVE List Score used
Possible user enumeration
A vulnerability in the External Interface of OTRS allows conclusions to be drawn about the existence of user accounts through different HTTP response codes and messages. This enables an attacker to systematically identify valid email addresses.
This issue affects:
-
OTRS 7.0.X
-
OTRS 8.0.X
-
OTRS 2023.X
-
OTRS 2024.X
-
OTRS 2025.X
- Record
CVE-2025-24391- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-203
- Updated
- 2026-11-02
EUVDEUVD-2025-21322
A vulnerability in the External Interface of OTRS allows conclusions to be drawn about the existence of user accounts through different HTTP response codes and messages. This enables an attacker to systematically identify valid email addresses.
This issue affects:
-
OTRS 7.0.X
-
OTRS 8.0.X
-
OTRS 2023.X
-
OTRS 2024.X
-
OTRS 2025.X
- Record
EUVD-2025-21322- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Updated
- 2026-11-02
GitHub AdvisoriesGHSA-fhjw-qvv3-45m7
A vulnerability in the External Interface of OTRS allows conclusions to be drawn about the...
A vulnerability in the External Interface of OTRS allows conclusions to be drawn about the existence of user accounts through different HTTP response codes and messages. This enables an attacker to systematically identify valid email addresses.
This issue affects:
-
OTRS 7.0.X
-
OTRS 8.0.X
-
OTRS 2023.X
-
OTRS 2024.X
-
OTRS 2025.X
- Record
GHSA-fhjw-qvv3-45m7- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-203
- Updated
- 2026-11-02
NVD
A vulnerability in the External Interface of OTRS allows conclusions to be drawn about the existence of user accounts through different HTTP response codes and messages. This enables an attacker to systematically identify valid email addresses.
This issue affects:
-
OTRS 7.0.X
-
OTRS 8.0.X
-
OTRS 2023.X
-
OTRS 2024.X
-
OTRS 2025.X
- Record
CVE-2025-24391- CVSS 3.1
- 5.3 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N - Weakness
- CWE-203
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| first indexed | CVE List, EUVD, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2025-24391 is a medium vulnerability (CVSS 5.3) in Otrs Ag Otrs, published July 14, 2025. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.28%, the 20th percentile. No source names a fixed version.