CVE-2025-41066: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in Horde Groupware
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.
CVE-2025-41066: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor in Horde Groupware
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.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- INCIBE
- Date Reserved
- 2025-04-16T09:09:34.457Z
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 692ef3cb3a1612a937294c94
Added to database: 12/2/2025, 2:12:27 PM
Last updated: 12/2/2025, 2:12:31 PM
Views: 1
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