{"id":"UBUNTU-CVE-2025-41066","details":"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.","modified":"2025-12-11T08:45:48.864758Z","published":"2025-12-02T14:16:00Z","upstream":["CVE-2025-41066"],"references":[{"type":"REPORT","url":"https://ubuntu.com/security/CVE-2025-41066"},{"type":"REPORT","url":"https://www.cve.org/CVERecord?id=CVE-2025-41066"},{"type":"REPORT","url":"https://www.incibe.es/en/incibe-cert/notices/aviso/disclosure-sensitive-information-horde-groupware"}],"affected":[{"package":{"name":"php-horde-groupware","ecosystem":"Ubuntu:16.04:LTS","purl":"pkg:deb/ubuntu/php-horde-groupware@5.2.12-1build1?arch=source&distro=xenial"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.10-1","5.2.11-1","5.2.12-1","5.2.12-1build1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-horde-groupware","binary_version":"5.2.12-1build1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-41066.json"}},{"package":{"name":"php-horde-groupware","ecosystem":"Ubuntu:18.04:LTS","purl":"pkg:deb/ubuntu/php-horde-groupware@5.2.22-1?arch=source&distro=bionic"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0"}]}],"versions":["5.2.21-1","5.2.22-1"],"ecosystem_specific":{"binaries":[{"binary_name":"php-horde-groupware","binary_version":"5.2.22-1"}]},"database_specific":{"source":"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-41066.json"}}],"schema_version":"1.7.3","severity":[{"type":"CVSS_V4","score":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N"},{"type":"CVSS_V3","score":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},{"type":"Ubuntu","score":"medium"}]}