CVE-2025-24391

Possible user enumeration

Description

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

Remediation

Solution:

  • Update to OTRS 2025.6.1. or later. Please note that there will be no OTRS 7 patches

Category

5.3
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.03%
Affected: OTRS AG OTRS
Published at:
Updated at:

References

Link Tags
https://otrs.com/release-notes/otrs-security-advisory-2025-07/

Frequently Asked Questions

What is the severity of CVE-2025-24391?
CVE-2025-24391 has been scored as a medium severity vulnerability.
How to fix CVE-2025-24391?
To fix CVE-2025-24391: Update to OTRS 2025.6.1. or later. Please note that there will be no OTRS 7 patches
Is CVE-2025-24391 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-24391 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-24391?
CVE-2025-24391 affects OTRS AG OTRS.
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