{"id":"CVE-2020-21493","aliases":["EUVD-2020-14263","GHSA-4hxw-v2j3-4qv8"],"status":"published","title":"An issue in the component route\\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate...","description":"An issue in the component route\\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames.","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":"primary","from":"nvd"},"epss":{"day":"2026-11-11","score":0.00999,"percentile":0.63195,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-10-04T21:00:35Z","modified":"2026-06-17T03:03:43Z","products":[{"vendor":"xiuno","product":"xiunobbs"}],"references":[{"url":"https://github.com/wanghaiwei/xiuno-docker/issues/3","tags":["x_refsource_MISC","x_transferred","Exploit","Issue Tracking","Third Party Advisory"]},{"url":"https://gitee.com/xiuno/xiunobbs/issues/I1690W","tags":["x_refsource_MISC","x_transferred","Issue Tracking","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-21493"},{"url":"https://github.com/advisories/GHSA-4hxw-v2j3-4qv8"}],"sources":{"cve":[{"id":"CVE-2020-21493","description":"An issue in the component route\\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames.","status":"published","published":"2021-10-04T21:00:35Z","modified":"2024-08-04T14:30:33.33Z","updated_at":"2026-11-02T14:35:48.854892Z"}],"euvd":[{"id":"EUVD-2020-14263","description":"An issue in the component route\\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames.","status":"published","published":"2021-10-04T21:00:35Z","modified":"2024-08-04T14:30:33Z","updated_at":"2026-11-03T03:07:23.734565Z"}],"ghsa":[{"id":"GHSA-4hxw-v2j3-4qv8","title":"An issue in the component route\\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate...","description":"An issue in the component route\\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames.","status":"published","published":"2022-05-24T19:16:24Z","modified":"2023-01-30T05:02:34Z","updated_at":"2026-11-02T14:46:39.888016Z"}],"nvd":[{"id":"CVE-2020-21493","description":"An issue in the component route\\user.php of Xiuno BBS v4.0.4 allows attackers to enumerate usernames.","status":"published","published":"2021-10-04T21:15:12.347Z","modified":"2026-06-17T03:03:43.483Z","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":"primary"},{"version":"2.0","score":5,"vector":"AV:N/AC:L/Au:N/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:45.704484Z"}]}}