CVE-2025-41066 – Disclosure of sensitive information in Horde Groupware

CVE ID : CVE-2025-41066

Published : Dec. 2, 2025, 2:01 p.m. | 24 minutes ago

Description : Horde Groupware v5.2.22 has a user enumeration vulnerability that allows an unauthenticated attacker to determine the existence of valid accounts on the system. To exploit the vulnerability, an HTTP request must be sent to ‘/imp/attachment.php’ including the parameters ‘id’ and ‘u’. If the specified user exists, the server will return the download of an empty file; if it does not exist, no download will be initiated, which unequivocally reveals the validity of the user.

Severity: 6.9 | MEDIUM

Visit the link for more details, such as CVSS details, affected products, timeline, and more…