{"id":"CVE-2020-28206","aliases":["EUVD-2020-20690","GHSA-hfhh-3vvv-4gqf"],"status":"published","title":"An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An \"User...","description":"An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An \"User enumeration and Improper Restriction of Excessive Authentication Attempts\" vulnerability exists in the admin login form, allowing a remote user to enumerate users in the administrator group. This also allows brute-force attacks on the passwords of users not in the administrator group.","severity":{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.0114,"percentile":0.66853,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-307"],"published":"2020-12-02T18:34:06Z","modified":"2026-06-17T03:10:12Z","products":[{"vendor":"bitrix24","product":"bitrix_framework"}],"references":[{"url":"https://justrealstag.medium.com/user-enumeration-improper-restriction-of-excessive-authentication-attempts-in-bitrix-98933a97e0e6","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-28206"},{"url":"https://github.com/advisories/GHSA-hfhh-3vvv-4gqf"}],"sources":{"cve":[{"id":"CVE-2020-28206","description":"An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An \"User enumeration and Improper Restriction of Excessive Authentication Attempts\" vulnerability exists in the admin login form, allowing a remote user to enumerate users in the administrator group. This also allows brute-force attacks on the passwords of users not in the administrator group.","status":"published","published":"2020-12-02T18:34:06Z","modified":"2024-08-04T16:33:58.451Z","updated_at":"2026-11-02T14:35:57.017407Z"}],"euvd":[{"id":"EUVD-2020-20690","description":"An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An \"User enumeration and Improper Restriction of Excessive Authentication Attempts\" vulnerability exists in the admin login form, allowing a remote user to enumerate users in the administrator group. This also allows brute-force attacks on the passwords of users not in the administrator group.","status":"published","published":"2020-12-02T18:34:06Z","modified":"2024-08-04T16:33:58Z","updated_at":"2026-11-03T03:07:10.123634Z"}],"ghsa":[{"id":"GHSA-hfhh-3vvv-4gqf","title":"An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An \"User...","description":"An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An \"User enumeration and Improper Restriction of Excessive Authentication Attempts\" vulnerability exists in the admin login form, allowing a remote user to enumerate users in the administrator group. This also allows brute-force attacks on the passwords of users not in the administrator group.","status":"published","published":"2022-05-24T17:35:12Z","modified":"2023-01-29T05:04:53Z","cwes":["CWE-307"],"updated_at":"2026-11-02T14:45:39.783328Z"}],"nvd":[{"id":"CVE-2020-28206","description":"An issue was discovered in Bitrix24 Bitrix Framework (1c site management) 20.0. An \"User enumeration and Improper Restriction of Excessive Authentication Attempts\" vulnerability exists in the admin login form, allowing a remote user to enumerate users in the administrator group. This also allows brute-force attacks on the passwords of users not in the administrator group.","status":"published","published":"2020-12-02T19:15:11.713Z","modified":"2026-06-17T03:10:12.067Z","cvss":[{"version":"3.1","score":6.5,"vector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"primary"},{"version":"2.0","score":4,"vector":"AV:N/AC:L/Au:S/C:P/I:N/A:N","level":"medium","assessor":"primary"}],"cwes":["CWE-307"],"updated_at":"2026-11-02T14:06:25.394006Z"}]}}