CVE-2025-24391: 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…

PriorityP428medium5.3CVSS 3.1

AVNACLPRNUINSUCLINAN

EPSS

0.24%

14.6th percentile

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

Affected

5 ranges

Vendor	Product	Version range	Fixed in
otrs_ag	otrs	—	—
otrs_ag	otrs	—	—
otrs_ag	otrs	—	—
otrs_ag	otrs	—	—
otrs_ag	otrs	2025.x – 2025.5.x	—

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