{"id":"CVE-2019-8449","url":"https://www.cyber-defence.io/tools/cve/CVE-2019-8449","generatedAt":"2026-11-05T02:42:47.769Z","title":"The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.","description":"The /rest/api/latest/groupuserpicker resource in Jira before version 8.4.0 allows remote attackers to enumerate usernames via an information disclosure vulnerability.","published":"2019-09-11T14:15:12.000Z","lastModified":"2026-06-17T02:42:01.000Z","status":"Modified","sourceIdentifier":"security@atlassian.com","cvss":{"version":"3.1","score":5.3,"severity":"MEDIUM","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N"},"cwe":["CWE-306"],"affected":["atlassian/jira"],"epss":{"score":0.84771,"percentile":0.99708,"date":"2026-11-03","history":[]},"kev":{"listed":false},"exploits":{"count":1,"verified":false,"firstPublished":"2020-02-03","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":47990,"kind":"exploit","title":"Jira 8.3.4 - Information Disclosure (Username Enumeration)","url":"https://www.exploit-db.com/exploits/47990","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/java/webapps/47990.py","file":"exploits/java/webapps/47990.py","published":"2020-02-03","added":"2020-02-03","updated":"2020-02-03","author":"Mufeed VH","type":"webapps","platform":"java","port":null,"verified":false,"codes":["CVE-2019-8449"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"EPSS puts the probability of exploitation in the next 30 days at 84.8%, higher than 100% of all known CVEs. Patch or mitigate before the next change window."},"changes":[],"references":[{"url":"http://packetstormsecurity.com/files/156172/Jira-8.3.4-Information-Disclosure.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"security@atlassian.com"},{"url":"https://jira.atlassian.com/browse/JRASERVER-69796","tags":["Issue Tracking","Vendor Advisory"],"source":"security@atlassian.com"},{"url":"http://packetstormsecurity.com/files/156172/Jira-8.3.4-Information-Disclosure.html","tags":["Exploit","Third Party Advisory","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://jira.atlassian.com/browse/JRASERVER-69796","tags":["Issue Tracking","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2019-8449","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."}