{"id":"CVE-2019-7550","aliases":["EUVD-2019-17089","GHSA-93h2-hj2q-42gj"],"status":"published","title":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using...","description":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the \"create user\" function. If a register/check/username?username= request corresponds to a username that exists, then an \"is already in use\" error is produced. NOTE: this product is discontinued.","severity":{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-08","score":0.01842,"percentile":0.79158,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-209"],"published":"2019-02-12T20:00:00Z","modified":"2026-06-17T02:40:41Z","products":[{"vendor":"jforum","product":"jforum"}],"references":[{"url":"https://www.criticalstart.com/2019/02/information-disclosure-in-jforum-2-1-x-syntax/","tags":["x_refsource_MISC","x_transferred","Exploit","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2019-7550"},{"url":"https://github.com/advisories/GHSA-93h2-hj2q-42gj"}],"sources":{"cve":[{"id":"CVE-2019-7550","description":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the \"create user\" function. If a register/check/username?username= request corresponds to a username that exists, then an \"is already in use\" error is produced. NOTE: this product is discontinued.","status":"published","published":"2019-02-12T20:00:00Z","modified":"2024-08-04T20:54:28.012Z","updated_at":"2026-11-02T14:32:22.432545Z"}],"euvd":[{"id":"EUVD-2019-17089","description":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the \"create user\" function. If a register/check/username?username= request corresponds to a username that exists, then an \"is already in use\" error is produced. NOTE: this product is discontinued.","status":"published","published":"2019-02-12T20:00:00Z","modified":"2024-08-04T20:54:28Z","updated_at":"2026-11-03T03:06:45.961014Z"}],"ghsa":[{"id":"GHSA-93h2-hj2q-42gj","title":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using...","description":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the \"create user\" function. If a register/check/username?username= request corresponds to a username that exists, then an \"is already in use\" error is produced. NOTE: this product is discontinued.","status":"published","published":"2022-05-13T01:22:52Z","modified":"2023-02-01T05:06:55Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","level":"medium"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:50:26.86128Z"}],"nvd":[{"id":"CVE-2019-7550","description":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the \"create user\" function. If a register/check/username?username= request corresponds to a username that exists, then an \"is already in use\" error is produced. NOTE: this product is discontinued.","status":"published","published":"2019-02-12T20:29:00.323Z","modified":"2026-06-17T02:40:41.227Z","cvss":[{"version":"3.0","score":5.3,"vector":"CVSS:3.0/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"}],"cwes":["CWE-209"],"updated_at":"2026-11-02T14:05:04.689371Z"}]}}