{"id":"CVE-2019-7550","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-7550","generatedAt":"2026-10-27T21:17:37.822Z","title":"In JForum 2.1.8, an unauthenticated, remote attacker can enumerate whether a user exists by using the \"create user\" function.","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.","published":"2019-02-12T20:29:00.000Z","lastModified":"2026-06-17T02:40:41.000Z","status":"Modified","sourceIdentifier":"cve@mitre.org","cvss":{"version":"3.0","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-209"],"affected":["jforum/jforum"],"epss":{"score":0.01842,"percentile":0.78864,"date":"2026-10-26","history":[]},"kev":{"listed":false},"exploits":{"count":0,"verified":false,"firstPublished":null,"source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[]},"verdict":{"level":"low","text":"Lower severity and a low EPSS score (1.84%). Track it; it rarely justifies an emergency change on its own."},"changes":[],"references":[{"url":"https://www.criticalstart.com/2019/02/information-disclosure-in-jforum-2-1-x-syntax/","tags":["Exploit","Third Party Advisory"],"source":"cve@mitre.org"},{"url":"https://www.criticalstart.com/2019/02/information-disclosure-in-jforum-2-1-x-syntax/","tags":["Exploit","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-7550","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}