{"id":"CVE-2025-59716","aliases":["EUVD-2025-37881","GHSA-967j-jc6x-3jm4"],"status":"published","title":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests...","description":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.","severity":{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp","from":"cve"},"epss":{"day":"2026-11-12","score":0.00951,"percentile":0.61786,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-200","CWE-203"],"published":"2025-11-05T00:00:00Z","modified":"2026-11-05T14:10:00Z","exploits":[{"source":"nuclei","id":"CVE-2025-59716","title":"ownCloud Guests - User Enumeration","type":"detection template","url":"https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2025/CVE-2025-59716.yaml"}],"products":[{"vendor":"owncloud","product":"guests"}],"references":[{"url":"https://github.com/owncloud/guests","tags":["Product","package"]},{"url":"https://yeswehack.com/reports/411806","tags":["Permissions Required","web"]},{"url":"https://marketplace.owncloud.com/apps/guests","tags":["Product","web"]},{"url":"https://gist.github.com/thesmartshadow/64ae0449e909174d0479a4f23657147f","tags":["Exploit","Third Party Advisory","web"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2025-59716","tags":["advisory"]},{"url":"https://github.com/advisories/GHSA-967j-jc6x-3jm4"},{"url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59716.json","tags":["advisory"]}],"sources":{"cve":[{"id":"CVE-2025-59716","description":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.","status":"published","published":"2025-11-05T00:00:00Z","modified":"2025-11-05T20:10:32.262Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"adp"}],"cwes":["CWE-200","CWE-203"],"updated_at":"2026-11-02T14:32:48.167635Z"}],"euvd":[{"id":"EUVD-2025-37881","description":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.","status":"published","published":"2025-11-05T00:00:00Z","modified":"2025-11-05T20:10:32Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-02T19:49:20.323605Z"}],"ghsa":[{"id":"GHSA-967j-jc6x-3jm4","title":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests...","description":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.","status":"published","published":"2025-11-05T17:48:29Z","modified":"2025-11-05T21:32:06Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-200"],"updated_at":"2026-11-02T15:04:41.281435Z"}],"nvd":[{"id":"CVE-2025-59716","description":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.","status":"published","published":"2025-11-05T17:15:44.8Z","modified":"2026-11-05T14:10:00.273Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"secondary"}],"cwes":["CWE-200","CWE-203"],"updated_at":"2026-11-05T19:55:51.56159Z"}],"osv":[{"id":"CVE-2025-59716","description":"ownCloud Guests before 0.12.5 allows unauthenticated user enumeration via the /apps/guests/register/{email}/{token} endpoint. Because of insufficient validation of the supplied token in showPasswordForm, the server responds differently when an e-mail address corresponds to a valid pending guest user rather than a non-existent user.","status":"published","published":"2025-11-05T00:00:00Z","modified":"2026-11-07T02:30:51.103467654Z","cvss":[{"version":"3.1","score":5.3,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"updated_at":"2026-11-07T03:07:57.874008Z"}]}}